UN Regulation No. 117
Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance

Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance

Series of Amendments and Supplements
Revisions and Amendments
Fifty-three Contracting Parties
Related groups: GRB, GRBP, GRRF, STD, TFST, and WT
Latest Documents
14 Jan 2021
Draft agenda for the 17th Worn Tyres working group session | WT-17-01
2021-01-14 2021-01-14
5 Jan 2021
Surface roughness studies on buffed tires: Lateral Scanning vs Circumferential Scanning | WT-17-03
2021-01-05 2021-01-05
5 Jan 2021
Draft minutes of the 11 December WGWT working group session with test centers | WT-17-02
2021-01-05 2021-01-05
5 Jan 2021
SRTT 16" tread depth wear evolution measurements | WT-16-03/Rev.2
2021-01-05 2021-01-05
4 Jan 2021
Proposal to amend the Worn Tyres informal working group Terms of Reference | GRBP-73-02
2021-01-04 2021-01-04
A total of 382 documents are available. See more
Upcoming Meetings
World Forum for the Harmonization of Vehicle Regulations | Session 183 | 9-12 Mar
Working Party on Noise and Tyres | Session 73 | 26-29 Jan
Informal Working Group on Worn Tyres | Session 17 | 19 Jan