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| Document Title | UN R117: Presentation on the concept for addressing wet grip on worn tyre requirements for C2 and C3 tyres | ||||||||
| Reference Number | GRBP-75-26/Rev.1 | ||||||||
| Date |
9 Feb 2022
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| Rulemaking Area(s) | UN R117 Tire Noise, Wet Adhesion, and Rolling Resistance | ||||||||
| Meeting(s) | |||||||||
| Related Documents | |||||||||
| GRBP/2022/23 | UN R117: Proposal for a 04 series of amendments (superseded) | ||||||||
| Downloads | |||||||||
| UNECE server | .pdf format | .pptx format | |||||||
| Excerpts from session reports related to this document | |||||||||
| GRBP | Session 75 | 8-11 Feb 2022 |
21. GRBP recalled that, at the previous session, it had adopted draft amendments on the procedure and thresholds on wet grip performance for C1 tyres in worn state which was subsequently submitted to WP.29 as draft 03 series of amendments to UN Regulation No. 117 (ECE/TRANS/WP.29/2021/12). To complement the document, the expert from IWG WGWT tabled further amendments (GRBP-75-25-Rev.1). GRBP adopted this proposal and requested the secretariat to submit it for consideration and vote at the June 2022 sessions of WP.29 and AC.1 as part of a new 03 series of amendments to UN Regulation No. 117. The expert from IWG WGWT also presented a concept proposal for addressing wet grip requirements for C2 and C3 tyres in worn state (GRBP-75-26-Rev.1). 22. GRBP agreed to request WP.29 and AC.1 to postpone to their June 2022 sessions consideration of ECE/TRANS/WP.29/2021/12, in order to combine it into a consolidated proposal with the adopted amendments mentioned in the previous paragraph. |
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