Listing all documents indexed to WT
2021 2020 2019
Date Reference Description Status
29 Apr 2019 WT-01-02/Rev.2
Draft agenda for the first Wet Grip and Worn Tyres (WGWT) informal group session
Informal Group Agenda 29 Apr 2019
11 Mar 2019 WT-01-01
Russia note on the performance of worn tyres with regard to wet grip
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 11 Mar 2019
26 Apr 2019 WT-01-03
Worn tyres: Tyre industry working draft proposal
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 26 Apr 2019
29 Apr 2019 WT-01-04
Worn tyres: Additional prescriptions to UN R117
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 29 Apr 2019
10 May 2019 WT-01-05
Draft minutes of the first WGWT informal group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 10 May 2019
10 May 2019 WT-01-06
Attendance list from the first WGWT informal group session
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 10 May 2019
10 May 2019 WT-01-07
Average Worn Profile of Tires in Europe
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 10 May 2019
16 Jul 2019 WT-02-01/Rev.1
Draft agenda for the 2nd WGWT informal group session
Informal Group Agenda Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 16 Jul 2019
16 Jul 2019 WT-02-02/Rev.1
Worn tyres: Tyre industry work status
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 16 Jul 2019
30 Jul 2019 WT-02-02/Rev.2
Worn tyres: Tyre industry work status
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 30 Jul 2019
30 Jul 2019 WT-02-03
Draft minutes of the 2nd WT informal group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 30 Jul 2019
10 Sep 2019 WT-03-01/Rev.2
Draft agenda for the 3rd Worn Tyres working group session
Informal Group Agenda 10 Sep 2019
05 Sep 2019 WT-03-02/Rev.1
UN R117: Worn tyre wet grip performance proposals
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 5 Sep 2019
04 Sep 2019 WT-03-03
Worn tyre buffing machine discussion presentation
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 4 Sep 2019
18 Oct 2019 WT-04-01/Rev.1
Draft agenda for the 4th informal group on Worn Tyres session
Informal Group Agenda 18 Oct 2019
27 Sep 2019 WT-03-10
Draft minutes of the 3rd Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 27 Sep 2019
27 Sep 2019 WT-03-06
EU Sectoral Profile - Transport
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Statistical data on road transport from the EU. 27 Sep 2019
19 Sep 2019 WT-03-05
Worn-tyre wet-grip performance: ongoing tests in France
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 19 Sep 2019
27 Sep 2019 WT-03-08
Worn Tyres working group action list-France
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 27 Sep 2019
27 Sep 2019 WT-03-07
Worn tyres wet traction work plan step 1
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 27 Sep 2019
21 Oct 2019 WT-03-09/Rev.1
Attendance list from the 3rd Working Tyres working group session
Informal Group Informal 21 Oct 2019
17 Oct 2019 WT-04-02
Worn Tyres: Tyre Industry work plan proposal
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 17 Oct 2019
31 Oct 2019 WT-04-02/Rev.1
Worn tyres: Industry work plan proposal
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 31 Oct 2019
18 Oct 2019 WT-04-03
Worn tyres: Japan test campaign
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 18 Oct 2019
18 Oct 2019 WT-04-04
Worn tyres: Testing companies work plan
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 18 Oct 2019
18 Oct 2019 WT-04-05
Worn tyres group timeline
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 18 Oct 2019
18 Oct 2019 WT-04-06
Worn tyres: Items to consider, including ageing
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance EC recommendations based on the <a href='https://op.europa.eu/en/publication-detail/-/publication/f3f32f73-7b42-4dda-b830-b3bd48090cfb' target='_blank'>Study on some safety-related aspects of tyre use</a>. 18 Oct 2019
21 Oct 2019 WT-04-07/Rev.1
Minutes of the 4th Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 21 Oct 2019
21 Oct 2019 WT-04-08
Participants list from the 4th Worn Tyres working group session
Informal Group Informal 21 Oct 2019
12 Nov 2019 WT-05-01
Draft agenda for the 5th Worn Tyres working group session
Informal Group Agenda 12 Nov 2019
20 Nov 2019 WT-05-02
Worn tyres: ETRTO input for the informal group work plan
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 20 Nov 2019
26 Nov 2019 WT-05-03
Worn tyres: Capacity assessment of the test centers
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 26 Nov 2019
26 Nov 2019 WT-05-04
Worn Tyres informal group tyre selection
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 26 Nov 2019
26 Nov 2019 WT-05-05
Draft report of the 5th Worn Tyres informal group session
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 26 Nov 2019
26 Nov 2019 WT-05-06
Worn Tyres informal group timeline
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 26 Nov 2019
12 Dec 2019 WT-06-01/Rev.3
Draft agenda for the 6th Worn Tyres working group session
Informal Group Agenda 12 Dec 2019
18 Dec 2019 WT-06-02/Rev.1
Work plan of the Worn Tyres working group
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 18 Dec 2019
10 Dec 2019 WT-06-03
Draft tyre selection for the Worn Tyres working group program
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 10 Dec 2019
18 Dec 2019 WT-06-04/Rev.1
Macro Gantt chart for the Worn Tyres work program
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 18 Dec 2019
10 May 2006 WT-06-06
RMA (USTMA) data on scrap tire chronological age
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 10 May 2006
12 May 2014 WT-06-07
Tire Aging: A Summary of NHTSA’s Work
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 12 May 2014
11 Dec 2019 WT-06-05
ITMA tyre selection for the Worn Tyres working group
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 11 Dec 2019
18 Dec 2019 WT-06-08
Draft minutes of the 6th Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 18 Dec 2019
18 Dec 2019 WT-06-09
Attendance list from the 6th Worn Tyres working group session
Informal Group Informal 18 Dec 2019
09 Jan 2020 WT-07-01
Draft agenda for the 7th Worn Tyres working group session
Informal Group Agenda Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 9 Jan 2020
16 Jan 2020 WT-07-02
Worn Tyres: Matrix for conducting testing of tyres
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 16 Jan 2020
20 Jan 2020 WT-07-03
Minutes of the 7th Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 20 Jan 2020
20 Jan 2020 WT-07-04
Participants list from the 7th Worn Tyres working group session
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 20 Jan 2020
24 Jan 2020 WT-08-01
Draft agenda for the 8th Worn Tyres working group session
Informal Group Agenda Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 24 Jan 2020
24 Jan 2020 WT-08-02
Draft status report of the Working Group on Worn Tyres
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 24 Jan 2020
27 Jan 2020 WT-08-03
Proposal on winter tyres buff profile
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 27 Jan 2020
27 Jan 2020 WT-08-04
Worn tyres working group testing and validation matrix
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 27 Jan 2020
27 Jan 2020 WT-08-05
Worn tyres: Proposals on Trailer Method test campaign
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 27 Jan 2020
27 Jan 2020 WT-08-06
Worn tyre wet-grip performance: Ongoing tests status
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 27 Jan 2020
27 Jan 2020 WT-08-07
IWG for Wet Grip of Worn Tyres: Status report to 71st GRBP (January 2020)
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 27 Jan 2020
04 Feb 2020 WT-08-08
Minutes of the 8th Worn Tyres Working Group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 4 Feb 2020
28 Jan 2020 WT-08-09
Attendance list from the 8th Worn Tyres Working Group session
Informal Group Informal 28 Jan 2020
13 Feb 2020 WT-09-01
Japan comments on report of the 8th Worn Tyres working group session
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 13 Feb 2020
05 Mar 2020 WT-09-03/Rev.2
Agenda for the 8th Worn Tyres working group session
Informal Group Agenda Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 5 Mar 2020
13 Feb 2020 WT-09-02
Worn Tyres working group and EU timetables
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 13 Feb 2020
09 Mar 2020 WT-09-04/Rev.2
Contacts for worn tyre validation test centres
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 9 Mar 2020
09 Mar 2020 WT-09-05/Rev.2
Logistical matrix for worn-tyre test procedure validations
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 9 Mar 2020
09 Mar 2020 WT-09-06/Rev.1
Buffing report template for worn-tyre round robin testing
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 9 Mar 2020
05 Mar 2020 WT-09-08
Reference Tyre and Wet Grip Index calculation: Trailer Method test campaign
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 5 Mar 2020
09 Mar 2020 WT-09-07/Rev.1
Worn tyre testing raw data template
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 9 Mar 2020
09 Mar 2020 WT-09-09
Worn tyres validation testing logistical principles
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 9 Mar 2020
09 Mar 2020 WT-09-10
Worn tyres round-robin guidelines for testing centers-example
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 9 Mar 2020
09 Mar 2020 WT-09-12
Attendance list from the 9th Worn Tyres working group session
Informal Group Informal 9 Mar 2020
09 Mar 2020 WT-09-13
China customs clearance for non-CCC tyres
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 9 Mar 2020
09 Mar 2020 WT-09-14
Worn tyre test engagement letter (template)
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 9 Mar 2020
11 Mar 2020 WT-09-11
Draft minutes of the 9th Work Tyres Working Group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 11 Mar 2020
23 Apr 2020 WT-10-01/Rev.1
Draft agenda for the 10th Worn Tyres Working Group session
Informal Group Agenda Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 23 Apr 2020
09 Apr 2020 WT-10-02
Worn tyres: Example of individual test report
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 9 Apr 2020
09 Apr 2020 WT-10-03
Worn tyres: Example of aggregated test report
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 9 Apr 2020
28 Apr 2020 WT-10-04
UN R117: Worn tyres and roughness measurement
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Assessment of ISO 4287-1997 and ISO 25178-2016 (Part 1:2016 or 25178 series) regarding the reference standard for the roughness measurement. 28 Apr 2020
27 Apr 2020 WT-10-05
Worn tyres test program: Impact of COVID-19 for tyre logistics in Japan
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 27 Apr 2020
27 Apr 2020 WT-10-06
Worn Tyres: Impact of COVID-19 on tyre industry and the informal group work plan
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 27 Apr 2020
27 Apr 2020 WT-10-07
Status of worn tyres work plan as of 27 April
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 27 Apr 2020
27 Apr 2020 WT-10-08
UN R117: Worn tyre buffing method
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Tyre Industry preliminary worn tyre definition proposal with an updated proposal for the tyre buffing method. 27 Apr 2020
08 May 2020 WT-10-09
Minutes of the 10th Worn Tyre Working Group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 8 May 2020
08 May 2020 WT-10-10
Attendance list from the 10th Worn Tyres Working Group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 8 May 2020
25 May 2020 WT-11-01/Rev.1
Draft agenda for the 11th Worn Tyres working group session
Informal Group Agenda Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 25 May 2020
25 May 2020 WT-11-02
Worn tyres: Tread depth measurement locations SRTT 16’’
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 25 May 2020
25 May 2020 WT-11-03
Life Test Study on New tyres versus Worn tyres
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 25 May 2020
02 Jun 2020 WT-11-04
Status of the Worn Tyres informal group work plan
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 2 Jun 2020
02 Jun 2020 WT-11-05
Worn tyres: UTAC aggregated test report
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 2 Jun 2020
02 Jun 2020 WT-11-06
Participants list from the 11th Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 2 Jun 2020
02 Jun 2020 WT-11-07
Minutes of the 11th Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 2 Jun 2020
21 Jun 2020 WT-12-01/Rev.1
Draft agenda for the 12th Worn Tyres working group session
Informal Group Agenda Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 21 Jun 2020
15 Jun 2020 WT-08-04/Rev.2
Worn tyres working group testing and validation matrix
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Updated for the 12th WT working group session. 15 Jun 2020
15 Jun 2020 WT-09-04/Rev.3
List of contact test centers
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Updated for the 12th Worn Tyres working group session. 15 Jun 2020
21 Jun 2020 WT-12-03
Worn tyres: Buffing procedures preliminary experience
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 21 Jun 2020
21 Jun 2020 WT-12-02
Status of the Worn Tyres Working Group work plan as of 18 June
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 21 Jun 2020
21 Jun 2020 WT-12-04
Worn tyres: ETRTO response on question from IDIADA regarding tread depth measurement in shoulder zone
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 21 Jun 2020
22 Jun 2020 WT-12-06
IDIADA worn tyres aggregated testing report
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 22 Jun 2020
23 Jun 2020 WT-12-06/Rev.1
Worn tyres: IDIADA aggregated testing data with task force comments
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 23 Jun 2020
23 Jun 2020 WT-12-07
Minutes of the 12th Worn Tyres Working Group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 23 Jun 2020
23 Jun 2020 WT-12-05
Participants list from the 12th Worn Tyres Working Group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 23 Jun 2020
25 Jun 2020 WT-12-08
Life Test Study on New Tyres vs Worn Tyres: France
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 25 Jun 2020
05 Jul 2020 WT-13-02
Worn tyres: Aggregate testing reports
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Validation testing report template for consideration during the 13th informal group session. 5 Jul 2020
06 Jul 2020 WT-13-01
Agenda for the 13th Worn Tyres working group session
Informal Group Agenda Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 6 Jul 2020
22 Jul 2020 WT-13-03
Status of the Worn Tyres working group work plan
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 22 Jul 2020
22 Jul 2020 WT-13-04
Worn Tyres working group draft status report to GRBP
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 22 Jul 2020
22 Jul 2020 WT-13-05
Participants list from the 13th Worn Tyres working group session
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 22 Jul 2020
22 Jul 2020 WT-13-06
Minutes of the 13th Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 22 Jul 2020
29 Aug 2020 WT-14-01
Draft agenda for the 14th Worn Tyres working group session
Informal Group Agenda Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 29 Aug 2020
09 Sep 2020 WT-14-02
Worn tyres: Aggregated testing report
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 9 Sep 2020
10 Sep 2020 WT-14-03
Worn tyres: Test data collection tables
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 10 Sep 2020
23 Sep 2020 WT-14-06
Attendance list of the 14th Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 23 Sep 2020
15 Sep 2020 WT-14-05
Minutes of the 14th Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 15 Sep 2020
15 Sep 2020 WT-14-04
Work plan of the Worn Tyres working group
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 15 Sep 2020
23 Oct 2020 WT-15-02/Rev.1
Status of the Worn Tyres informal group work plan
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 23 Oct 2020
17 Oct 2020 WT-15-03
Worn tyres informal group data collection template
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 17 Oct 2020
23 Oct 2020 WT-15-04/Rev.1
Worn tyres: Proposal for data sharing process
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 23 Oct 2020
21 Oct 2020 WT-15-05/Rev.2
Worn tyres: Guidelines for testing phase of the informal group work plan
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 21 Oct 2020
19 Oct 2020 WT-15-01
Agenda for the 15th Worn Tyres informal group session
Informal Group Agenda Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 19 Oct 2020
20 Oct 2020 WT-08-04/Rev.1
Worn tyres working group testing and validation matrix
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 20 Oct 2020
23 Oct 2020 WT-15-07
Attendance list from the 15th Worn Tyres informal group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 23 Oct 2020
23 Oct 2020 WT-15-08
Worn tyres data collection template (final version)
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 23 Oct 2020
23 Oct 2020 WT-15-06
Draft report of the 15th Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 23 Oct 2020
19 Nov 2020 WT-16-01/Rev.1
Draft agenda for the 16th Worn Tyres working group session
Informal Group Agenda Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 19 Nov 2020
16 Nov 2020 WT-08-04/Rev.3
Worn tyres working group testing and validation matrix
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 16 Nov 2020
16 Nov 2020 WT-16-03
SRTT 16" tread depth wear evolution measurements
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 16 Nov 2020
21 Nov 2020 WT-16-06
Draft minutes of the 16th Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 21 Nov 2020
21 Nov 2020 WT-16-05
Attendance list from the 16th Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 21 Nov 2020
21 Nov 2020 WT-16-02
Status of the Worn Tyres working group work plan
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 21 Nov 2020
19 Nov 2020 WT-16-04
Worn tyres: Proposals for sharing of the buffing reports
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 19 Nov 2020
05 Jan 2021 WT-16-03/Rev.2
SRTT 16" tread depth wear evolution measurements
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 5 Jan 2021
05 Jan 2021 WT-17-02
Draft minutes of the 11 December WGWT working group session with test centers
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 5 Jan 2021
05 Jan 2021 WT-17-03
Surface roughness studies on buffed tires: Lateral Scanning vs Circumferential Scanning
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 5 Jan 2021
14 Jan 2021 WT-17-01
Draft agenda for the 17th Worn Tyres working group session
Informal Group Agenda Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 14 Jan 2021
19 Jan 2021 WT-16-03/Rev.3
SRTT 16" tread depth wear evolution measurements
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 19 Jan 2021
23 Mar 2021 WT-17-05/Rev.1
Effect of Tyre Mean Texture Depth on µ peak and Average Deceleration
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 23 Mar 2021
20 Jan 2021 WT-17-04
Status of the Worn Tyres working group work plan
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 20 Jan 2021
20 Jan 2021 WT-17-06
Attendance list from the 17th Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 20 Jan 2021
20 Jan 2021 WT-17-07
Draft Worn Tyres working group status report to GRBP
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 20 Jan 2021
01 Mar 2021 WT-17-08/Rev.1
Final minutes of the 17th Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 1 Mar 2021
17 Feb 2021 WT-18-01
Draft agenda for the 18th Worn Tyres working group session
Informal Group Agenda Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 17 Feb 2021
22 Feb 2021 WT-18-04
Worn tyres: Draft buffing procedure evaluation sheet
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 22 Feb 2021
21 Feb 2021 WT-18-02
Worn tyres: C2 and C3 considerations
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 21 Feb 2021
02 Mar 2021 WT-18-06/Rev.1
Minutes of the 18th Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 2 Mar 2021
02 Mar 2021 WT-18-05
Attendance list from the 18th Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 2 Mar 2021
02 Mar 2021 WT-18-03
Worn Tyres working group work plan status
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 2 Mar 2021
22 Mar 2021 WT-19-01/Rev.1
Agenda for the 19th Worn Tyres working group session
Informal Group Agenda Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 22 Mar 2021
22 Mar 2021 WT-19-02
Worn tyres: Concept for C2 and C3 tyres
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 22 Mar 2021
25 Mar 2021 WT-19-03
Worn tyres: Minutes of ETRTO-CATARC discussion on 9 March 2021
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 25 Mar 2021
23 Mar 2021 WT-19-04
Worn tyres: Wet grip test issue
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Presentation on wet grip test issue concerning to use of SRTT<sub>worn</sub> for RRT. 23 Mar 2021
23 Mar 2021 WT-19-05
Attendance list from the 19th Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 23 Mar 2021
25 Mar 2021 WT-19-06
Draft minutes of the 19th Worn Tyres working group session
Informal Group Report Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 25 Mar 2021
25 Mar 2021 WT-19-07
Status of the Worn Tyres working group work plan
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance 25 Mar 2021