| Wet grip on worn tyres: Status of tyre-selection deliberations |
| Reference Number: WT-65-02 |
| Meeting Sessions: 65th WT session (7 Jan 2025) |
| Document date: 07 Jan 25 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
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| Participants list from the 65th Worn Tyres informal group session |
| Reference Number: WT-65-04 |
| Meeting Sessions: 65th WT session (7 Jan 2025) |
| Document date: 08 Jan 25 |
| 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 |
| Wet Grip on Worn Tyres: Minutes of the 65th (January 2025) session |
| Reference Number: WT-65-03 |
| Meeting Sessions: 65th WT session (7 Jan 2025) |
| Document date: 08 Jan 25 |
| 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 |
| Wet Grip on Worn Tyres: Agenda for the 66th (February 2025) session |
| Reference Number: WT-66-01 |
| Meeting Sessions: 66th WT session (13 Feb 2025) |
| Document date: 05 Feb 25 |
| 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 |
| Wet Grip on Worn Tyres: Comments on the proposed revisions to the terms of reference |
| Reference Number: WT-66-02 |
| Submitted by: Japan |
| Meeting Sessions: 66th WT session (13 Feb 2025) |
| Document date: 06 Feb 25 |
| 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 tyres: Comments on document WT-66-02 |
| Reference Number: WT-66-03 |
| Submitted by: ETRTO |
| Meeting Sessions: 66th WT session (13 Feb 2025) |
| Document date: 12 Feb 25 |
| 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 |
| Wet grip on worn tyres anonymised listing for precision improvement testing |
| Reference Number: WT-66-05 |
| Meeting Sessions: 66th WT session (13 Feb 2025) |
| Document date: 10 Mar 25 |
| 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 |
| Wet Grip on Worn Tyres: Minutes of the 66th (February 2025) session |
| Reference Number: WT-66-06 |
| Meeting Sessions: 66th WT session (13 Feb 2025) |
| Document date: 10 Mar 25 |
| 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: 66th (February) Wet Grip on Worn Tyres informal group session |
| Reference Number: WT-66-07 |
| Meeting Sessions: 66th WT session (13 Feb 2025) |
| Document date: 10 Mar 25 |
| 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 anonymised tyre testing list |
| Reference Number: WT-66-04 |
| Meeting Sessions: 66th WT session (13 Feb 2025) |
| Document date: 26 Feb 25 |
| 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 |
| Wet Grip on Worn Tyres: Agenda for the 67th (March 2025) session |
| Reference Number: WT-67-01 |
| Meeting Sessions: 67th WT session (27 Mar 2025) |
| Document date: 21 Mar 25 |
| 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 |
| Wet braking of worn tires: Real-world assessment of regulatory requirements |
| Reference Number: WT-67-02 |
| Submitted by: JRC |
| Meeting Sessions: 67th WT session (27 Mar 2025) |
| Document date: 25 Mar 25 |
| 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 |
| Wet grip on worn tyres: Template for Stage 1 test campaign data reporting |
| Reference Number: WT-67-03 |
| Meeting Sessions: 67th WT session (27 Mar 2025) |
| Document date: 31 Mar 25 |
| 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 |
| Wet grip on worn tyres: Anonymised status of tyre deliveries |
| Reference Number: WT-67-04 |
| Meeting Sessions: 67th WT session (27 Mar 2025) |
| Document date: 31 Mar 25 |
| 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 67th Worn Tyres working group session |
| Reference Number: WT-67-06 |
| Meeting Sessions: 67th WT session (27 Mar 2025) |
| Document date: 31 Mar 25 |
| 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 |
| VESevo: Viscoelasticity Evaluation System-Evolved |
| Reference Number: WT-68-03 |
| Submitted by: VESevo |
| Meeting Sessions: 68th WT session (22 May 2025) |
| Document date: 21 May 25 |
| 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 |
| JRC findings of non-compliance of tyres |
| Reference Number: WT-68-02 |
| Submitted by: JRC |
| Meeting Sessions: 68th WT session (22 May 2025) |
| Document date: 21 May 25 |
| 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 |
| Wet Grip on Worn Tyres: Minutes of the 67th (March 2025) session |
| Reference Number: WT-67-05/Rev.1 |
| Meeting Sessions: 67th WT session (27 Mar 2025) |
| Document date: 22 May 25 |
| 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 tyre deliveries (anonymised) |
| Reference Number: WT-68-04/Rev.2 |
| Meeting Sessions: 68th WT session (22 May 2025) |
| Document date: 22 May 25 |
| 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 |
| Wet Grip on Worn Tyres: Agenda for the 68th (May 2025) session |
| Reference Number: WT-68-01/Rev.2 |
| Meeting Sessions: 68th WT session (22 May 2025) |
| Document date: 22 May 25 |
| 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 |
| Wet Grip on Worn Tyres: Minutes of the 68th (May 2025) session |
| Reference Number: WT-68-05 |
| Meeting Sessions: 68th WT session (22 May 2025) |
| Document date: 27 Jun 25 |
| 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: Participants list from the 68th informal group session |
| Reference Number: WT-68-06 |
| Meeting Sessions: 68th WT session (22 May 2025) |
| Document date: 27 Jun 25 |
| 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 |
| Wet Grip on Worn Tyres: Agenda for the 69th (August 2025) session |
| Reference Number: WT-69-01 |
| Meeting Sessions: 69th WT session (26 Aug 2025) |
| Document date: 19 Aug 25 |
| 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 |
| Assessment on removing C2-C3 provisions from wet grip worn tyre provisions |
| Reference Number: WT-69-02 |
| Submitted by: ETRTO |
| Meeting Sessions: 69th WT session (26 Aug 2025) |
| Document date: 25 Aug 25 |
| 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: deliveries and testing status |
| Reference Number: WT-69-04 |
| Meeting Sessions: 69th WT session (26 Aug 2025) |
| Document date: 25 Aug 25 |
| 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 |
| Wet Grip on Worn Tyres: Proposal to amend the informal group terms of reference |
| Reference Number: WT-69-03 |
| Submitted by: JASIC |
| Meeting Sessions: 69th WT session (26 Aug 2025) |
| Document date: 25 Aug 25 |
| 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 |
| Wet Grip on Worn Tyres: Minutes of the 69th (August 2025) session |
| Reference Number: WT-69-05 |
| Meeting Sessions: 69th WT session (26 Aug 2025) |
| Document date: 25 Sep 25 |
| 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: Participants list from the 69th informal group session |
| Reference Number: WT-69-06 |
| Meeting Sessions: 69th WT session (26 Aug 2025) |
| Document date: 25 Sep 25 |
| 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 |
| Wet Grip on Worn Tyres: Agenda for the 70th (October 2025) session |
| Reference Number: WT-70-01 |
| Meeting Sessions: 70th WT session (14 Oct 2025) |
| Document date: 27 Sep 25 |
| 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: Status of tyre deliveries and testing |
| Reference Number: WT-70-02 |
| Meeting Sessions: 70th WT session (14 Oct 2025) |
| Document date: 14 Oct 25 |
| 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 |
| Wet Grip on Worn Tyres: Minutes of the 70th (October 2025) session |
| Reference Number: WT-70-03 |
| Meeting Sessions: 70th WT session (14 Oct 2025) |
| Document date: 10 Nov 25 |
| 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: Participants list from the 70th session |
| Reference Number: WT-70-04 |
| Meeting Sessions: 70th WT session (14 Oct 2025) |
| Document date: 10 Nov 25 |
| 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 |
| Wet Grip on Worn Tyres: Agenda for the 71st (November 2025) session |
| Reference Number: WT-71-01 |
| Meeting Sessions: 71st WT session (25 Nov 2025) |
| Document date: 18 Nov 25 |
| 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 |
| Wet grip on worn tyres: Status of tyre deliveries and validation testing |
| Reference Number: WT-71-02 |
| Meeting Sessions: 71st WT session (25 Nov 2025) |
| Document date: 25 Nov 25 |
| 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 |
| Wet Grip on Worn Tyres: Minutes of the 71st (November 2025) session |
| Reference Number: WT-71-03 |
| Meeting Sessions: 71st WT session (25 Nov 2025) |
| Document date: 25 Nov 25 |
| 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 |
| Wet Grip on Worn Tyres: Participants list from the 71st session |
| Reference Number: WT-71-04 |
| Meeting Sessions: 71st WT session (25 Nov 2025) |
| Document date: 25 Nov 25 |
| Click here to view the full document file |