GAR | GRBP/2026/16

GRBP/2026/16

UN R117: Proposal for a Supplement 19 to the 02 series of amendments

Source(s)

ETRTO

Date

18 Jun 2026

Status

GR approved as amended

Subject

UN R117 Tire Noise, Wet Adhesion, and Rolling Resistance

Meeting(s)

GRBP | Session 84 | 2-4 Sep

Agenda item 5. (a) UN Regulation No. 117 (Tyre Rolling Resistance, Rolling Noise and Wet Grip)

Proposal to amend para. 2.18. to update the year reference in standard F2493 from 24 to 26, amend paras. 6.6. and 6.7. to change “classified” to “categorized”, revise tread depth and void to fill ratio requirements for class C1 special use tyres, restructure requirements for professional off-road tyres with subsections for each class, amend Annex 3 para. 4.2.2. to correct the measurement unit of coefficient K1 to dB(A), amend Annex 3 Appendix 1 Part 2 item 3.1. to update the ISO 10844 year reference from 2014 to 2021, and amend Annex 7 Appendix 3 Item 5 to enable SRTT weighted average to be reported for each candidate in the test results table.

Downloads

UNECE server

Related documents

Excerpts from session reports

GRBP | Session 84 | 2-4 Sep

18. The representative of ETRTO introduced ECE/TRANS/WP.29/GRBP/2026/16 and ECE/TRANS/WP.29/GRBP/2026/17, as amended by GRBP-84-19 and GRBP-84-20 respectively. The representative of the UK asked additional information about the use of “no performance change” in the justification associated with the updated reference to ASTM standard. The representative of ETRTO clarified that ETRTO was not overseeing ASTM standards, and that the performance has not been changed between the two version of the ASTM standards. The representative of France asked if similar proposals could be expected for other tyre legislation apart from UN Regulation No. 117. The representative of ETRTO confirmed other tyre legislation could also be concerned by similar updates in the future.

19. The representative of ETRTO introduced GRBP-84-18 improving the 02 series of amendments to UN Regulation No. 117 similarly to GRBP-83-24-Rev.1 introduced during the last session of GRBP.

20. GRBP adopted ECE/TRANS/WP.29/GRBP/2026/16, as amended by GRBP-84-19, as well as GRBP-84-18, and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their March 2027 sessions as draft new Supplement to 02 series of amendments to UN Regulation No. 117.