GAR

World Forum for the Harmonization of Vehicle Regulations

← WP.29 195

Session 196

WP.29 197 →

23-27 Jun 2025 · Geneva

Agenda All Documents Formal Informal Adopted Report

← Agenda Item 4.8.10.

4.8.11. UN R117: Proposal for Supplement 3 to the 04 series of amendments

Agenda Item 4.8.12. →

Annotations

Documentation

ECE/TRANS/WP.29/GRBP/79, para. 15, based on ECE/TRANS/WP.29/GRBP/2024/23 as amended by GRBP-80-11 and ECE/TRANS/WP.29/GRBP/2025/13, as amended by GRBP-81-09-Rev.1.

WP.29/2025/76

UN R117: Proposal for Supplement 3 to the 04 series of amendments

UN R117: Proposal for Supplement 3 to the 04 series of amendments
Reference Number: WP.29/2025/76
Proposal to standardize provisions for the water depth measurement, reduce the track friction range requirements under the test procedures, clarfy that adhesion performance on wet surfaces (wet adhesion) is required not only for C1 tyres, but also C2 and C3 tyres, update the standards references to ASTM F2493-244, F3611-24, F3676-24, F3675-24 and ISO 4000-1:2024, align the definitions of tread groove and principal grooves with proposals for UN R30 and R54, simplify the wording of the requirements for professional off-road tyres, and correct the transitional provision in paragraph 12.23. to specify approvals “first issued after 31 August 2028”.
Meeting Sessions: 196th WP.29 session (23-27 Jun 2025)
Document date: 10 Apr 25
Document status: Adopted by WP.29
Relevant to: UN Regulation No. 117 \| Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance
Adoption Vote
This proposal (WP.29/2025/76), as amended by para. 72, was adopted by the World Forum. Thirty-four Contracting Parties out of the 57 applying UN R117 were present for the vote by AC.1. Thirty-four voted in favor with zero against and zero abstaining.
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