This group was authorized in 2019 to consider the performance of tyres after initial use. The broad concern is to ensure that somewhat worn tyres continue to comply with the requirements for new tyre approvals (i.e., no serious degradation in performance after initial use and before such wear as would require tyre replacement).
| Agenda for the 32nd Worn Tyres task force session |
| Reference Number: WT-32-01/Rev.1 |
| Meeting Sessions: 32nd WT session (12 Jan 2022) |
| Document date: 12 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn Tyre Post Processing task force status report |
| Reference Number: WT-32-02 |
| Meeting Sessions: 32nd WT session (12 Jan 2022) |
| Document date: 11 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn Tyres: JASIC Review on ETRTO Proposed Equations |
| Reference Number: WT-32-03 |
| Submitted by: JASIC |
| Meeting Sessions: 32nd WT session (12 Jan 2022) |
| Document date: 11 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| EU Tyre Industry proposal for Wet grip on Worn tyres (C1) |
| Reference Number: WT-32-04 |
| Submitted by: ETRMA and ETRTO |
| Meeting Sessions: 32nd WT session (12 Jan 2022) |
| Document date: 11 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn Tyres: Timeline proposal for additional test campaign |
| Reference Number: WT-32-05 |
| Submitted by: ETRTO |
| Meeting Sessions: 32nd WT session (12 Jan 2022) |
| Document date: 11 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Attendance list from the 32nd Worn Tyres working group session |
| Reference Number: WT-32-06 |
| Meeting Sessions: 32nd WT session (12 Jan 2022) |
| Document date: 13 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Agenda for the 33rd Worn Tyres working group session |
| Reference Number: WT-33-01 |
| Meeting Sessions: 33rd WT session (19 Jan 2022) |
| Document date: 17 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn tyres: Comments on threshold proposal and timeline for additional assessment |
| Reference Number: WT-33-04 |
| Submitted by: JASIC |
| Meeting Sessions: 33rd WT session (19 Jan 2022) |
| Document date: 19 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| View full document file for more information |
| Click here to view the full document file |
| Report of the 32nd Worn Tyres working group session |
| Reference Number: WT-32-06/Rev.1 |
| Meeting Sessions: 32nd WT session (12 Jan 2022) |
| Document date: 19 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn tyres: Proposal for additional test campaign timeline |
| Reference Number: WT-33-03 |
| Submitted by: ETRTO |
| Meeting Sessions: 33rd WT session (19 Jan 2022) |
| Document date: 19 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn tyres: Proposal for C1 wet-grip threshold |
| Reference Number: WT-33-02 |
| Submitted by: ETRMA and ETRTO |
| Meeting Sessions: 33rd WT session (19 Jan 2022) |
| Document date: 19 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| View full document file for more information |
| Click here to view the full document file |
| Attendance list from the 33rd Worn Tyres informal group session |
| Reference Number: WT-33-05 |
| Meeting Sessions: 33rd WT session (19 Jan 2022) |
| Document date: 25 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Minutes from the 33rd Worn Tyres informal group session |
| Reference Number: WT-33-06 |
| Meeting Sessions: 33rd WT session (19 Jan 2022) |
| Document date: 25 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn tyre wet grip threshold provisions pursuant to the 33rd Worn Tyres informal group session |
| Reference Number: WT-33-07 |
| Meeting Sessions: 33rd WT session (19 Jan 2022) |
| Document date: 25 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Agenda for the 34th Worn Tyres informal group session |
| Reference Number: WT-34-01/Rev.1 |
| Meeting Sessions: 34th WT session (27 Jan 2022) |
| Document date: 26 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Status report from the Worn Tyres Post-Processing task force |
| Reference Number: WT-34-02 |
| Meeting Sessions: 34th WT session (27 Jan 2022) |
| Document date: 26 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Draft amendments to document WP.29/2022/11 on worn tyres |
| Reference Number: WT-34-03 |
| Meeting Sessions: 34th WT session (27 Jan 2022) |
| Document date: 26 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| View full document file for more information |
| Click here to view the full document file |
| Threshold proposal for C1 wet grip of worn tyres (Revision 2) |
| Reference Number: WT-34-04 |
| Submitted by: ETRMA and ETRTO |
| Meeting Sessions: 34th WT session (27 Jan 2022) |
| Document date: 26 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| View full document file for more information |
| Click here to view the full document file |
| Proposal for worn tyre track friction range |
| Reference Number: WT-34-05 |
| Submitted by: ETRTO |
| Meeting Sessions: 34th WT session (27 Jan 2022) |
| Document date: 26 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Proposal to amend document WP.29/2022/11 on worn tyres |
| Reference Number: WT-34-06 |
| Submitted by: Japan |
| Meeting Sessions: 34th WT session (27 Jan 2022) |
| Document date: 27 Jan 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Tender for a study on wet grip of worn tyres |
| Reference Number: WT-35-02 |
| Submitted by: IDIADA |
| Meeting Sessions: 35th WT session (3 Feb 2022) |
| Document date: 01 Feb 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Agenda for the 35th Worn Tyres informal group session |
| Reference Number: WT-35-01/Rev.1 |
| Meeting Sessions: 35th WT session (3 Feb 2022) |
| Document date: 02 Feb 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Concept proposal for C2 and C3 worn tyres wet grip |
| Reference Number: WT-35-03 |
| Submitted by: ETRTO |
| Meeting Sessions: 35th WT session (3 Feb 2022) |
| Document date: 02 Feb 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Input on C1 tyre track friction range |
| Reference Number: WT-35-04 |
| Submitted by: ETRTO |
| Meeting Sessions: 35th WT session (3 Feb 2022) |
| Document date: 02 Feb 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Proposal to amend document GRBP/2022/11 on worn tyres |
| Reference Number: WT-35-06 |
| Meeting Sessions: 35th WT session (3 Feb 2022) |
| Document date: 04 Feb 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| View full document file for more information |
| Click here to view the full document file |
| UN R117: Concept proposal for addressing C2 and C3 worn tyres wet grip |
| Reference Number: WT-35-07 |
| Meeting Sessions: 35th WT session (3 Feb 2022) |
| Document date: 04 Feb 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Attendance list from the 35th Worn Tyres working group session |
| Reference Number: WT-35-08 |
| Meeting Sessions: 35th WT session (3 Feb 2022) |
| Document date: 04 Feb 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Report from the 35th Worn Tyres working group session |
| Reference Number: WT-35-11 |
| Meeting Sessions: 35th WT session (3 Feb 2022) |
| Document date: 04 Feb 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn Tyres working group status report to GRBP-75 |
| Reference Number: WT-35-09 |
| Meeting Sessions: 35th WT session (3 Feb 2022) |
| Document date: 04 Feb 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Proposal for revised Worn Tyres working group terms of reference |
| Reference Number: WT-35-10 |
| Meeting Sessions: 35th WT session (3 Feb 2022) |
| Document date: 04 Feb 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Position on worn tyre track friction properties |
| Reference Number: WT-35-05 |
| Submitted by: JASIC |
| Meeting Sessions: 35th WT session (3 Feb 2022) |
| Document date: 04 Feb 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Agenda for the 36th Worn Tyres working group session |
| Reference Number: WT-36-01 |
| Meeting Sessions: 36th WT session (4 Mar 2022) |
| Document date: 01 Mar 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn tyres: Data collection compilation SRTT 2mm |
| Reference Number: WT-36-02/Rev.2 |
| Meeting Sessions: 37th WT session (6 Apr 2022) |
| Document date: 01 Mar 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn tyres: Evaluation of Molded SRTT-worn |
| Reference Number: WT-36-03 |
| Submitted by: JASIC |
| Meeting Sessions: 36th WT session (4 Mar 2022) |
| Document date: 04 Mar 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn Tyres working group work plan |
| Reference Number: WT-36-04 |
| Meeting Sessions: 36th WT session (4 Mar 2022) |
| Document date: 08 Mar 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Attendance list from the 36th Worn Tyres working group session |
| Reference Number: WT-36-05 |
| Meeting Sessions: 36th WT session (4 Mar 2022) |
| Document date: 08 Mar 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Report of the 36th Worn Tyres working group session |
| Reference Number: WT-36-06 |
| Meeting Sessions: 36th WT session (4 Mar 2022) |
| Document date: 08 Mar 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Agenda for the 37th Worn Tyres working group session |
| Reference Number: WT-37-01/Rev.1 |
| Meeting Sessions: 37th WT session (6 Apr 2022) |
| Document date: 05 Apr 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn WGI C1 tyre cluster definition proposals for UHP, Legal Race and All Terrain |
| Reference Number: WT-37-02 |
| Submitted by: ETRTO |
| Meeting Sessions: 37th WT session (6 Apr 2022) |
| Document date: 05 Apr 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn tyres: C2 and C3 regulatory text proposal |
| Reference Number: WT-37-03 |
| Submitted by: ETRTO |
| Meeting Sessions: 37th WT session (6 Apr 2022) |
| Document date: 05 Apr 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Agenda for the supplemental session to the 37th Worn Tyres working group session |
| Reference Number: WT-37-01 |
| Meeting Sessions: 37th WT session (19 Apr 2022) |
| Document date: 18 Apr 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Japan comments on worn tyre cluster definitions |
| Reference Number: WT-37-02 |
| Submitted by: JASIC |
| Meeting Sessions: 37th WT session (19 Apr 2022) |
| Document date: 18 Apr 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Minutes of the 37th Worn Tyres working group session |
| Reference Number: WT-37-05 |
| Meeting Sessions: 37th WT session (6 Apr 2022) |
| Document date: 18 Apr 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Attendance list from the 37th Worn Tyres working group session |
| Reference Number: WT-37-04 |
| Meeting Sessions: 37th WT session (6 Apr 2022) |
| Document date: 18 Apr 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Attendance list from the supplemental meeting of the 37th Worn Tyres working group session |
| Reference Number: WT-37-03 |
| Meeting Sessions: 37th WT session (19 Apr 2022) |
| Document date: 21 Apr 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Minutes of the supplemental meeting of the 37th Worn Tyres working group session |
| Reference Number: WT-37-05 |
| Meeting Sessions: 37th WT session (19 Apr 2022) |
| Document date: 21 Apr 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Updated work plan of the Worn Tyres working group |
| Reference Number: WT-37-04 |
| Meeting Sessions: 37th WT session (19 Apr 2022) |
| Document date: 21 Apr 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Agenda for the 28th Worn Tyres working group |
| Reference Number: WT-38-01 |
| Meeting Sessions: 38th WT session (28 Apr 2022) |
| Document date: 25 Apr 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Minutes from the 38th Worn Tyres working group session |
| Reference Number: WT-38-04 |
| Meeting Sessions: 38th WT session (28 Apr 2022) |
| Document date: 29 Apr 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Updated work plan for the Worn Tyres working group |
| Reference Number: WT-38-03 |
| Meeting Sessions: 38th WT session (28 Apr 2022) |
| Document date: 29 Apr 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Attendance list from the 38th Worn Tyres working group session |
| Reference Number: WT-38-02/Rev.1 |
| Meeting Sessions: 38th WT session (28 Apr 2022) |
| Document date: 02 May 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Agenda for the 39th Worn Tyres working group session |
| Reference Number: WT-39-01 |
| Meeting Sessions: 39th WT session (13 May 2022) |
| Document date: 13 May 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn tyres cluster definition and threshold |
| Reference Number: WT-39-02 |
| Submitted by: ETRTO |
| Meeting Sessions: 39th WT session (13 May 2022) |
| Document date: 13 May 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| View full document file for more information |
| Click here to view the full document file |
| Threshold proposal for C2 and C3 tyres wet grip in worn state |
| Reference Number: WT-39-03 |
| Submitted by: ETRTO |
| Meeting Sessions: 39th WT session (13 May 2022) |
| Document date: 13 May 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Attendance list from the 39th Worn Tyres working group session |
| Reference Number: WT-39-04 |
| Meeting Sessions: 39th WT session (13 May 2022) |
| Document date: 19 May 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Report from the 39th Worn Tyres working group session |
| Reference Number: WT-39-05 |
| Meeting Sessions: 39th WT session (13 May 2022) |
| Document date: 19 May 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Worn Tyres drafting group proposal for C1-C2-C3 tyres (04 series of amendments) |
| Reference Number: WT-40-02 |
| Meeting Sessions: 40th WT session (25 May 2022) |
| Document date: 23 May 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Proposal for Standard Reference Test Tyre (SRTT) in worn state |
| Reference Number: WT-40-03 |
| Submitted by: Japan |
| Meeting Sessions: 40th WT session (25 May 2022) |
| Document date: 23 May 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Agenda for the 40th Worn Tyres working group session |
| Reference Number: WT-40-01/Rev.1 |
| Meeting Sessions: 40th WT session (25 May 2022) |
| Document date: 25 May 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Proposal for C2/C3 tyre wet grip in worn state |
| Reference Number: WT-40-04 |
| Submitted by: Japan |
| Meeting Sessions: 40th WT session (25 May 2022) |
| Document date: 25 May 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Minutes from the 40th Worn Tyres working group session |
| Reference Number: WT-40-06 |
| Meeting Sessions: 40th WT session (25 May 2022) |
| Document date: 01 Jun 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Attendance list from the 40th Worn Tyres working group session |
| Reference Number: WT-40-05 |
| Meeting Sessions: 40th WT session (25 May 2022) |
| Document date: 01 Jun 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Proposal to add tread depth measurement prescriptions in Annex 9 |
| Reference Number: WT-41-02 |
| Submitted by: ETRTO |
| Meeting Sessions: 41st WT session (8 Jun 2022) |
| Document date: 03 Jun 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Agenda for the 41st Worn Tyres working group session |
| Reference Number: WT-41-01 |
| Meeting Sessions: 41st WT session (8 Jun 2022) |
| Document date: 06 Jun 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Draft proposal for 04 series of amendments on C1, C2, and C3 tyres |
| Reference Number: WT-41-03/Rev.1 |
| Meeting Sessions: 41st WT session (8 Jun 2022) |
| Document date: 08 Jun 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Consolidated drafting group proposal for Supplement 1 to the 03 series of amendments |
| Reference Number: WT-41-04/Rev.1 |
| Meeting Sessions: 41st WT session (8 Jun 2022) |
| Document date: 08 Jun 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn tyres: C1 cluster definition and threshold proposals for “UHP” and “All Terrain” |
| Reference Number: WT-41-05/Rev.1 |
| Submitted by: ETRTO |
| Meeting Sessions: 41st WT session (8 Jun 2022) |
| Document date: 09 Jun 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| View full document file for more information |
| Click here to view the full document file |
| Attendance list from the 41st Worn Tyres working group session |
| Reference Number: WT-41-06 |
| Meeting Sessions: 41st WT session (8 Jun 2022) |
| Document date: 09 Jun 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Minutes from the 41st Worn Tyres working group session |
| Reference Number: WT-41-07 |
| Meeting Sessions: 41st WT session (8 Jun 2022) |
| Document date: 09 Jun 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Agenda for the 42nd Worn Tyres working group session |
| Reference Number: WT-42-01 |
| Meeting Sessions: 42nd WT session (10 Jun 2022) |
| Document date: 10 Jun 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Draft text for 03 series Supplement 3 include tread depth measurement |
| Reference Number: WT-42-02 |
| Meeting Sessions: 42nd WT session (10 Jun 2022) |
| Document date: 10 Jun 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Draft text for 04 series amendments on worn C1, C2, and C3 tyres |
| Reference Number: WT-42-03 |
| Submitted by: EC |
| Meeting Sessions: 42nd WT session (10 Jun 2022) |
| Document date: 10 Jun 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Attendance list from the 42nd Worn Tyres working group session |
| Reference Number: WT-42-04 |
| Meeting Sessions: 42nd WT session (10 Jun 2022) |
| Document date: 10 Jun 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Minutes from the 42nd Worn Tyres working group session |
| Reference Number: WT-42-05 |
| Meeting Sessions: 42nd WT session (10 Jun 2022) |
| Document date: 10 Jun 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn Tyres Post-Processing subgroup status report |
| Reference Number: WT-43-02 |
| Meeting Sessions: 43rd WT session (5 Jul 2022) |
| Document date: 30 Jun 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Agenda for the 43rd Worn Tyres working group session |
| Reference Number: WT-43-01 |
| Meeting Sessions: 43rd WT session (5 Jul 2022) |
| Document date: 04 Jul 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn tyres: Standard reference test tyre data collection compilation |
| Reference Number: WT-43-05 |
| Meeting Sessions: 43rd WT session (5 Jul 2022) |
| Document date: 07 Jul 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
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| Minutes of the 43rd Worn Tyres working group session |
| Reference Number: WT-43-03 |
| Meeting Sessions: 43rd WT session (5 Jul 2022) |
| Document date: 07 Jul 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Attendance list from the 43rd Worn Tyres working group session |
| Reference Number: WT-43-04 |
| Meeting Sessions: 43rd WT session (5 Jul 2022) |
| Document date: 07 Jul 22 |
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| Worn tyres: Proposal for 2023 additional test campaign matrix |
| Reference Number: WT-44-01 |
| Submitted by: JASIC |
| Meeting Sessions: 44th WT session (27 Jul 2022) |
| Document date: 12 Jul 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| View full document file for more information |
| Click here to view the full document file |
| Agenda for the 44th Worn Tyres working group session |
| Reference Number: WT-44-02 |
| Meeting Sessions: 44th WT session (27 Jul 2022) |
| Document date: 20 Jul 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Small group discussion on usage purpose clustering |
| Reference Number: WT-44-04 |
|
Report on discussions concerning the definition of a specific cluster ‘tyre with a nominal aspect ratio equal to or less than 40, a section width equal to or higher than 235 mm and suitable for speeds equal to or greater than 300 km/h’ by indicating the intended use of such tyres. |
| Meeting Sessions: 44th WT session (27 Jul 2022) |
| Document date: 20 Jul 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn tyres: Comments on proposal for 2023 additional test campaign work plan |
| Reference Number: WT-44-03 |
| Submitted by: ETRTO |
| Meeting Sessions: 44th WT session (27 Jul 2022) |
| Document date: 26 Jul 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| View full document file for more information |
| Click here to view the full document file |
| UN R117: Draft text for informal document to amend document GRBP/2022/22 |
| Reference Number: WT-44-05/Rev.1 |
| Meeting Sessions: 44th WT session (27 Jul 2022) |
| Document date: 27 Jul 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| View full document file for more information |
| Click here to view the full document file |
| UN R117: Draft text for an informal document to amend document GRBP/2022/23 |
| Reference Number: WT-44-06/Rev.1 |
| Meeting Sessions: 44th WT session (27 Jul 2022) |
| Document date: 27 Jul 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| View full document file for more information |
| Click here to view the full document file |
| Attendance list from the 44th Worn Tyres working group session |
| Reference Number: WT-44-10 |
| Meeting Sessions: 44th WT session (27 Jul 2022) |
| Document date: 27 Jul 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn tyres: Proposal for additional test campaign |
| Reference Number: WT-44-07 |
| Submitted by: JASIC |
| Meeting Sessions: 44th WT session (27 Jul 2022) |
| Document date: 27 Jul 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn Tyres working group status report to GRBP |
| Reference Number: WT-44-08 |
| Meeting Sessions: 44th WT session (27 Jul 2022) |
| Document date: 28 Jul 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Minutes of the 44th Worn Tyres working group |
| Reference Number: WT-44-09 |
| Meeting Sessions: 44th WT session (27 Jul 2022) |
| Document date: 28 Jul 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Draft agenda for the 45th Worn Tyres working group session |
| Reference Number: WT-45-01 |
| Meeting Sessions: 45th WT session (13 Sep 2022) |
| Document date: 05 Sep 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| ETRTO workplan proposal for Wet Grip on Worn tyre test precision improvement |
| Reference Number: WT-45-02 |
| Submitted by: ETRTO |
| Meeting Sessions: 45th WT session (13 Sep 2022) |
| Document date: 12 Sep 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn tyre wet test precision improvement test plan proposal |
| Reference Number: WT-45-03 |
| Submitted by: JASIC |
| Meeting Sessions: 45th WT session (13 Sep 2022) |
| Document date: 13 Sep 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Participants list from the 45th Worn Tyres working group session |
| Reference Number: WT-45-05 |
| Meeting Sessions: 45th WT session (13 Sep 2022) |
| Document date: 14 Sep 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Minutes of the 45th Worn Tyres working group session |
| Reference Number: WT-45-04 |
| Meeting Sessions: 45th WT session (13 Sep 2022) |
| Document date: 14 Sep 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Agenda for the 46th Worn Tyres working group session |
| Reference Number: WT-46-01/Rev.1 |
| Meeting Sessions: 46th WT session (13 Oct 2022) |
| Document date: 13 Oct 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn tyre wet test precision improvement: test plan proposal |
| Reference Number: WT-46-02 |
| Submitted by: JASIC |
| Meeting Sessions: 46th WT session (13 Oct 2022) |
| Document date: 13 Oct 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn tyres: 2023 test campaign-report on JASIC/JATMA-ETRTO meetings |
| Reference Number: WT-46-03 |
|
Report on discussions to reconcile proposals for a test campaign towards improving the wet grip test precision. |
| Submitted by: JASIC |
| Meeting Sessions: 46th WT session (13 Oct 2022) |
| Document date: 13 Oct 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Participation list from the 46th Worn Tyres working group session |
| Reference Number: WT-46-04 |
| Meeting Sessions: 46th WT session (13 Oct 2022) |
| Document date: 16 Oct 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Minutes from the 46th Worn Tyres working session |
| Reference Number: WT-46-05 |
| Meeting Sessions: 46th WT session (13 Oct 2022) |
| Document date: 16 Oct 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Agenda for the 47th Worn Tyres working group session |
| Reference Number: WT-47-01 |
| Meeting Sessions: 47th WT session (7 Nov 2022) |
| Document date: 28 Oct 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn tyres work plan proposal |
| Reference Number: WT-47-02 |
| Submitted by: ETRTO |
| Meeting Sessions: 47th WT session (7 Nov 2022) |
| Document date: 04 Nov 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Worn Tyres working group: Draft updated terms of reference |
| Reference Number: WT-47-03/Rev.3 |
| Meeting Sessions: 47th WT session (7 Nov 2022) |
| Document date: 09 Nov 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Draft text for a 03 series of amendments on wet grip of worn tyres |
| Reference Number: WT-47-04 |
| Meeting Sessions: 47th WT session (7 Nov 2022) |
| Document date: 09 Nov 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Minutes from the 47th Worn Tyres working group session |
| Reference Number: WT-47-05 |
| Meeting Sessions: 47th WT session (7 Nov 2022) |
| Document date: 09 Nov 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Attendance list from the 47th Worn Tyres working group session |
| Reference Number: WT-47-06 |
| Meeting Sessions: 47th WT session (7 Nov 2022) |
| Document date: 09 Nov 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Agenda for the 48th Worn Tyres working group session |
| Reference Number: WT-48-01/Rev.1 |
| Meeting Sessions: 48th WT session (13 Dec 2022) |
| Document date: 10 Dec 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Status report of the Worn Tyres working group small group activities |
| Reference Number: WT-48-02 |
| Meeting Sessions: 48th WT session (13 Dec 2022) |
| Document date: 12 Dec 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Participants list from the 48th Worn Tyres working group session |
| Reference Number: WT-48-04 |
| Meeting Sessions: 48th WT session (13 Dec 2022) |
| Document date: 16 Dec 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Minutes from the 48th Worn Tyres working group session |
| Reference Number: WT-48-03 |
| Meeting Sessions: 48th WT session (13 Dec 2022) |
| Document date: 21 Dec 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |