| Draft minutes of the 11 December WGWT working group session with test centers |
| Reference Number: WT-17-02 |
| Meeting Sessions: 17th WT session (19 Jan 2021) |
| Document date: 05 Jan 21 |
| 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 |
| SRTT 16" tread depth wear evolution measurements |
| Reference Number: WT-16-03/Rev.2 |
| Meeting Sessions: 17th WT session (19 Jan 2021) |
| Document date: 05 Jan 21 |
| 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 |
| Surface roughness studies on buffed tires: Lateral Scanning vs Circumferential Scanning |
| Reference Number: WT-17-03 |
| Submitted by: JATMA |
| Meeting Sessions: 17th WT session (19 Jan 2021) |
| Document date: 05 Jan 21 |
| 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 17th Worn Tyres working group session |
| Reference Number: WT-17-01 |
| Meeting Sessions: 17th WT session (19 Jan 2021) |
| Document date: 14 Jan 21 |
| 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 |
| SRTT 16" tread depth wear evolution measurements |
| Reference Number: WT-16-03/Rev.3 |
| Meeting Sessions: 17th WT session (19 Jan 2021) |
| Document date: 19 Jan 21 |
| 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 of the Worn Tyres working group work plan |
| Reference Number: WT-17-04 |
| Meeting Sessions: 17th WT session (19 Jan 2021) |
| Document date: 20 Jan 21 |
| 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 17th Worn Tyres working group session |
| Reference Number: WT-17-06 |
| Meeting Sessions: 17th WT session (19 Jan 2021) |
| Document date: 20 Jan 21 |
| 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 Worn Tyres working group status report to GRBP |
| Reference Number: WT-17-07 |
| Meeting Sessions: 17th WT session (19 Jan 2021) |
| Document date: 20 Jan 21 |
| 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 18th Worn Tyres working group session |
| Reference Number: WT-18-01 |
| Meeting Sessions: 18th WT session (22 Feb 2021) |
| Document date: 17 Feb 21 |
| 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: Draft buffing procedure evaluation sheet |
| Reference Number: WT-18-04 |
| Meeting Sessions: 18th WT session (22 Feb 2021) |
| Document date: 22 Feb 21 |
| 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 considerations |
| Reference Number: WT-18-02 |
| Submitted by: ETRTO |
| Meeting Sessions: 18th WT session (22 Feb 2021) |
| Document date: 21 Feb 21 |
| 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 18th Worn Tyres working group session |
| Reference Number: WT-18-05 |
| Meeting Sessions: 18th WT session (22 Feb 2021) |
| Document date: 02 Mar 21 |
| 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 status |
| Reference Number: WT-18-03 |
| Meeting Sessions: 18th WT session (22 Feb 2021) |
| Document date: 02 Mar 21 |
| 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 18th Worn Tyres working group session |
| Reference Number: WT-18-06/Rev.1 |
| Meeting Sessions: 18th WT session (22 Feb 2021) |
| Document date: 02 Mar 21 |
| 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 |
| Final minutes of the 17th Worn Tyres working group session |
| Reference Number: WT-17-08/Rev.1 |
| Meeting Sessions: 17th WT session (19 Jan 2021) |
| Document date: 01 Mar 21 |
| 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 19th Worn Tyres working group session |
| Reference Number: WT-19-01/Rev.1 |
| Meeting Sessions: 19th WT session (23 Mar 2021) |
| Document date: 22 Mar 21 |
| 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: Concept for C2 and C3 tyres |
| Reference Number: WT-19-02 |
| Submitted by: ETRTO |
| Meeting Sessions: 19th WT session (23 Mar 2021) |
| Document date: 22 Mar 21 |
| 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: Wet grip test issue |
| Reference Number: WT-19-04 |
|
Presentation on wet grip test issue concerning to use of SRTTworn for RRT. |
| Submitted by: CATARC |
| Meeting Sessions: 19th WT session (23 Mar 2021) |
| Document date: 23 Mar 21 |
| 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 19th Worn Tyres working group session |
| Reference Number: WT-19-05 |
| Meeting Sessions: 19th WT session (23 Mar 2021) |
| Document date: 23 Mar 21 |
| 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 |
| Effect of Tyre Mean Texture Depth on µ peak and Average Deceleration |
| Reference Number: WT-17-05/Rev.1 |
| Submitted by: JASIC |
| Meeting Sessions: 17th WT session (19 Jan 2021) and 19th WT session (23 Mar 2021) |
| Document date: 23 Mar 21 |
| 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: Minutes of ETRTO-CATARC discussion on 9 March 2021 |
| Reference Number: WT-19-03 |
| Meeting Sessions: 19th WT session (23 Mar 2021) |
| Document date: 25 Mar 21 |
| 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 minutes of the 19th Worn Tyres working group session |
| Reference Number: WT-19-06 |
| Meeting Sessions: 19th WT session (23 Mar 2021) |
| Document date: 25 Mar 21 |
| 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 of the Worn Tyres working group work plan |
| Reference Number: WT-19-07 |
| Meeting Sessions: 19th WT session (23 Mar 2021) |
| Document date: 25 Mar 21 |
| 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 20th Worn Tyres informal group session |
| Reference Number: WT-20-01 |
| Meeting Sessions: 20th WT session (20 Apr 2021) |
| Document date: 16 Apr 21 |
| 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 |
| Consolidated comments on C2/C3 worn tyres wet grip test proposal |
| Reference Number: WT-20-02 |
| Meeting Sessions: 20th WT session (20 Apr 2021) |
| Document date: 21 Apr 21 |
| 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 informal group work plan status |
| Reference Number: WT-20-03 |
| Meeting Sessions: 20th WT session (20 Apr 2021) |
| Document date: 27 Apr 21 |
| 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 minutes from the 20th Worn Tyres informal group session |
| Reference Number: WT-20-05 |
| Meeting Sessions: 20th WT session (20 Apr 2021) |
| Document date: 27 Apr 21 |
| 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 20th Worn Tyres working group session |
| Reference Number: WT-20-04 |
| Meeting Sessions: 20th WT session (20 Apr 2021) |
| Document date: 27 Apr 21 |
| 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: Supplement 13 excerpts relevant to worn tyres |
| Reference Number: WT-21-04 |
| Meeting Sessions: 21st WT session (21 May 2021) |
| Document date: 18 May 21 |
| 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 21st Worn Tyres working group session |
| Reference Number: WT-21-01/Rev.2 |
| Meeting Sessions: 21st WT session (21 May 2021) |
| Document date: 20 May 21 |
| 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: Results of buffing procedure evaluations |
| Reference Number: WT-21-05 |
| Meeting Sessions: 21st WT session (21 May 2021) |
| Document date: 20 May 21 |
| 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 |
| Supplement 13 to UN R117 |
| Reference Number: WT-21-03/Rev.1 |
| Meeting Sessions: 21st WT session (21 May 2021) |
| Document date: 21 May 21 |
| 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 minutes of the 21st Worn Tyres working group session |
| Reference Number: WT-21-06 |
| Meeting Sessions: 21st WT session (21 May 2021) |
| Document date: 28 May 21 |
| 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 22nd Worn Tyres group session |
| Reference Number: WT-22-01 |
| Meeting Sessions: 22nd WT session (15 Jun 2021) |
| Document date: 14 Jun 21 |
| 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 Supplement 13 to the 02 series of amendments |
| Reference Number: WT-22-02/Rev.1 |
| Meeting Sessions: 22nd WT session (15 Jun 2021) |
| Document date: 15 Jun 21 |
| 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 22nd Worn Tyres working group session |
| Reference Number: WT-22-06 |
| Meeting Sessions: 22nd WT session (15 Jun 2021) |
| Document date: 20 Jun 21 |
| 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 presentation on worn tyres post processing provisions |
| Reference Number: WT-22-05 |
| Submitted by: ETRTO |
| Meeting Sessions: 22nd WT session (15 Jun 2021) |
| Document date: 20 Jun 21 |
| 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 minutes from the 3rd Worn Tyres Post Processing subgroup session |
| Reference Number: WT-22-04 |
| Meeting Sessions: 22nd WT session (15 Jun 2021) |
| Document date: 20 Jun 21 |
| 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 22nd Worn Tyres working group session |
| Reference Number: WT-22-03 |
| Meeting Sessions: 22nd WT session (15 Jun 2021) |
| Document date: 20 Jun 21 |
| 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: Comments on the draft provisions for worn tyre wet grip |
| Reference Number: WT-23-04 |
| Submitted by: Netherlands |
| Meeting Sessions: 23rd WT session (21 Jun 2021) |
| Document date: 21 Jun 21 |
| 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: Comments on the draft provisions for worn tyres |
| Reference Number: WT-23-03 |
| Submitted by: ETRTO and JASIC |
| Meeting Sessions: 23rd WT session (21 Jun 2021) |
| Document date: 21 Jun 21 |
| 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 23rd Worn Tyres working group session |
| Reference Number: WT-23-01 |
| Meeting Sessions: 23rd WT session (21 Jun 2021) |
| Document date: 20 Jun 21 |
| 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 amendments |
| Reference Number: WT-23-06 |
|
Proposal to introduce a procedure and thresholds on wet grip performance for tyres in worn state for C1 tyres as submitted to GRBP by the Worn Tyres working group. |
| Meeting Sessions: 23rd WT session (21 Jun 2021) |
| Document date: 01 Jul 21 |
| 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 23rd Worn Tyres working group session |
| Reference Number: WT-23-05 |
| Meeting Sessions: 23rd WT session (21 Jun 2021) |
| Document date: 01 Jul 21 |
| 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 minutes of the 23rd Worn Tyres working group session |
| Reference Number: WT-23-07 |
| Meeting Sessions: 23rd WT session (21 Jun 2021) |
| Document date: 01 Jul 21 |
| 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 24th Worn Tyres working group session |
| Reference Number: WT-24-01 |
| Meeting Sessions: 24th WT session (29-28 Jul 2021) |
| Document date: 28 Jul 21 |
| 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 status report |
| Reference Number: WT-24-02 |
| Meeting Sessions: 24th WT session (29-28 Jul 2021) |
| Document date: 28 Jul 21 |
| 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: Draft proposal for amendments to UN R117 |
| Reference Number: WT-24-05 |
| Meeting Sessions: 24th WT session (29-28 Jul 2021) |
| Document date: 30 Jul 21 |
| 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 24th Worn Tyres working group session |
| Reference Number: WT-24-03 |
| Meeting Sessions: 24th WT session (29-28 Jul 2021) |
| Document date: 30 Jul 21 |
| 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 minutes of the 24th Worn Tyres working group session |
| Reference Number: WT-24-04 |
| Meeting Sessions: 24th WT session (29-28 Jul 2021) |
| Document date: 30 Jul 21 |
| 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 25th Worn Tyres working group session |
| Reference Number: WT-25-01 |
| Meeting Sessions: 25th WT session (23 Aug 2021) |
| Document date: 09 Aug 21 |
| 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 |
| Water depth vs SRTT Average μpeak |
| Reference Number: WT-24-06/Rev.1 |
| Submitted by: JASIC |
| Meeting Sessions: 24th WT session (29-28 Jul 2021) |
| Document date: 24 Aug 21 |
| 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 25th Worn Tyres informal group session |
| Reference Number: WT-25-03 |
| Meeting Sessions: 25th WT session (23 Aug 2021) |
| Document date: 30 Aug 21 |
| 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: 03 series (wet adhesion of C1-class tyres in worn state with buffed SRTTworn) transitional provisions draft |
| Reference Number: WT-25-04 |
| Meeting Sessions: 25th WT session (23 Aug 2021) |
| Document date: 30 Aug 21 |
| 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 revised terms of reference proposal |
| Reference Number: WT-25-05 |
| Submitted by: EC |
| Meeting Sessions: 25th WT session (23 Aug 2021) |
| Document date: 30 Aug 21 |
| 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 25th Worn Tyres working group session |
| Reference Number: WT-25-02 |
| Meeting Sessions: 25th WT session (23 Aug 2021) |
| Document date: 31 Aug 21 |
| 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 26th Worn Tyres working group session |
| Reference Number: WT-26-01 |
| Meeting Sessions: 26th WT session (8 Sep 2021) |
| Document date: 07 Sep 21 |
| 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 task force report to the Worn Tyres working group |
| Reference Number: WT-26-02 |
| Meeting Sessions: 26th WT session (8 Sep 2021) |
| Document date: 07 Sep 21 |
| 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: 03 series (wet adhesion of C1-class tyres in worn state with buffed SRTTworn) transitional provisions draft |
| Reference Number: WT-25-04/Rev.1 |
| Meeting Sessions: 26th WT session (8 Sep 2021) |
| Document date: 07 Sep 21 |
| 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/2021/12 |
| Reference Number: WT-26-04 |
|
Proposal to maintain the performance stages for the following reasons:
|
| Meeting Sessions: 26th WT session (8 Sep 2021) |
| Document date: 08 Sep 21 |
| 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/2021/12 |
| Reference Number: WT-26-03 |
|
| Meeting Sessions: 26th WT session (8 Sep 2021) |
| Document date: 08 Sep 21 |
| 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 26th Worn Tyres working group session |
| Reference Number: WT-26-07 |
| Meeting Sessions: 26th WT session (8 Sep 2021) |
| Document date: 09 Sep 21 |
| 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 26th Worn Tyres working group session |
| Reference Number: WT-26-05 |
| Meeting Sessions: 26th WT session (8 Sep 2021) |
| Document date: 09 Sep 21 |
| 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 planning schedule |
| Reference Number: WT-26-06 |
| Meeting Sessions: 26th WT session (8 Sep 2021) |
| Document date: 09 Sep 21 |
| 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 amendments to the Worn Tyres working group terms of reference |
| Reference Number: WT-26-08 |
| Submitted by: Japan |
| Meeting Sessions: 26th WT session (8 Sep 2021) |
| Document date: 09 Sep 21 |
| 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 27th Worn Tyres working group session |
| Reference Number: WT-27-01 |
| Meeting Sessions: 27th WT session (10 Sep 2021) |
| Document date: 09 Sep 21 |
| 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 status report |
| Reference Number: WT-27-02 |
| Meeting Sessions: 27th WT session (10 Sep 2021) |
| Document date: 10 Sep 21 |
| 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: Amendments to document GRBP/2021/12 |
| Reference Number: WT-27-03 |
| Meeting Sessions: 27th WT session (10 Sep 2021) |
| Document date: 10 Sep 21 |
| 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 amendments to GRBP/2021/12 |
| Reference Number: WT-27-07 |
| Meeting Sessions: 27th WT session (10 Sep 2021) |
| Document date: 11 Sep 21 |
| 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 27th Worn Tyres working group session |
| Reference Number: WT-27-04 |
| Meeting Sessions: 27th WT session (10 Sep 2021) |
| Document date: 11 Sep 21 |
| 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-27-06 |
| Meeting Sessions: 27th WT session (10 Sep 2021) |
| Document date: 11 Sep 21 |
| 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 27th Worn Tyres working group session |
| Reference Number: WT-27-05 |
| Meeting Sessions: 27th WT session (10 Sep 2021) |
| Document date: 11 Sep 21 |
| 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 session |
| Reference Number: WT-28-01 |
| Meeting Sessions: 28th WT session (15 Sep 2021) |
| Document date: 11 Sep 21 |
| 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-28-03 |
| Submitted by: ETRTO |
| Meeting Sessions: 28th WT session (15 Sep 2021) |
| Document date: 14 Sep 21 |
| 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 28th Worn Tyres working group session |
| Reference Number: WT-28-04 |
| Meeting Sessions: 28th WT session (15 Sep 2021) |
| Document date: 16 Sep 21 |
| 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: New proposal C1 WGI @ Worn Molded SRTT |
| Reference Number: WT-28-02/Rev.1 |
| Meeting Sessions: 28th WT session (15 Sep 2021) |
| Document date: 17 Sep 21 |
| 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 29th Worn Tyres working group session |
| Reference Number: WT-29-01/Rev.1 |
| Meeting Sessions: 29th WT session (9 Nov 2021) |
| Document date: 08 Nov 21 |
| 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: Position on ETRTO Proposal for Correction Equations (Revision 2) |
| Reference Number: WT-29-02 |
| Submitted by: Japan |
| Meeting Sessions: 29th WT session (9 Nov 2021) |
| Document date: 08 Nov 21 |
| 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 Wet Grip Index Equation and Coefficients |
| Reference Number: WT-29-03 |
|
Worn Wet grip Index equation proposed by ETRTO on 25 October |
| Meeting Sessions: 29th WT session (9 Nov 2021) |
| Document date: 08 Nov 21 |
| 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-29-04 |
| Meeting Sessions: 29th WT session (9 Nov 2021) |
| Document date: 08 Nov 21 |
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| Attendance list from the 29th Worn Tyres informal group session |
| Reference Number: WT-29-05 |
| Meeting Sessions: 29th WT session (9 Nov 2021) |
| Document date: 16 Nov 21 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
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| Minutes of the 29th Worn Tyres informal group session |
| Reference Number: WT-29-06 |
| Meeting Sessions: 29th WT session (9 Nov 2021) |
| Document date: 16 Nov 21 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
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| Minutes of the 28th Worn Tyres working group session |
| Reference Number: WT-28-05/Rev.1 |
| Meeting Sessions: 28th WT session (15 Sep 2021) |
| Document date: 24 Nov 21 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
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| Wet Grip on Worn C1 tyres: Threshold definition approach considerations |
| Reference Number: WT-30-02 |
| Submitted by: ETRTO |
| Meeting Sessions: 30th WT session (29 Nov 2021) |
| Document date: 26 Nov 21 |
| 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 30th Worn Tyres informal group session |
| Reference Number: WT-30-01 |
| Meeting Sessions: 30th WT session (29 Nov 2021) |
| Document date: 26 Nov 21 |
| 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 30th Worn Tyres informal group session |
| Reference Number: WT-30-03 |
| Meeting Sessions: 30th WT session (29 Nov 2021) |
| Document date: 30 Nov 21 |
| 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: Additional test campaign and necessary quantity of "molded SRTT worn" |
| Reference Number: WT-30-04 |
| Submitted by: JASIC |
| Meeting Sessions: 30th WT session (29 Nov 2021) |
| Document date: 30 Nov 21 |
| 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 3 December 2021 Worn Tyres informal group follow-up discussion |
| Reference Number: WT-30-08 |
| Meeting Sessions: 30th WT session (29 Nov 2021) |
| Document date: 02 Dec 21 |
| 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 additional Worn Tyres group test campaign |
| Reference Number: WT-30-06 |
| Submitted by: JASIC |
| Meeting Sessions: 30th WT session (29 Nov 2021) |
| Document date: 03 Dec 21 |
| 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 SRTT evaluation workplan |
| Reference Number: WT-30-07 |
| Submitted by: ETRTO |
| Meeting Sessions: 30th WT session (29 Nov 2021) |
| Document date: 03 Dec 21 |
| 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 30th Worn Tyres informal group session |
| Reference Number: WT-30-05 |
| Meeting Sessions: 30th WT session (29 Nov 2021) |
| Document date: 07 Dec 21 |
| 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 follow-up to the 30th Worn Tyres informal group session |
| Reference Number: WT-30-09 |
| Meeting Sessions: 30th WT session (29 Nov 2021) |
| Document date: 07 Dec 21 |
| 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 follow-up to the 30th Worn Tyres informal group session |
| Reference Number: WT-30-10 |
| Meeting Sessions: 30th WT session (29 Nov 2021) |
| Document date: 08 Dec 21 |
| 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 Worn Tyres additional test campaign for minimum assessment |
| Reference Number: WT-30-11 |
| Meeting Sessions: 30th WT session (29 Nov 2021) |
| Document date: 08 Dec 21 |
| 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 31st Worn Tyres working group session |
| Reference Number: WT-31-01 |
| Meeting Sessions: 31st WT session (15 Dec 2021) |
| Document date: 13 Dec 21 |
| 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 31st Worn Tyres informal group session |
| Reference Number: WT-31-04 |
| Meeting Sessions: 31st WT session (15 Dec 2021) |
| Document date: 21 Dec 21 |
| 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 31st Worn Tyres informal group session |
| Reference Number: WT-31-02 |
| Meeting Sessions: 31st WT session (15 Dec 2021) |
| Document date: 21 Dec 21 |
| 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 text campaign for minimum assessment |
| Reference Number: WT-31-03 |
| Submitted by: JASIC |
| Meeting Sessions: 31st WT session (15 Dec 2021) |
| Document date: 21 Dec 21 |
| 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 |