GAR | GRBP/2026/10

Document Title	UN R172: Proposal for a 01 series of amendments
Reference Number	GRBP/2026/10
Date	28 Nov 2025
Summary	Proposal to: Clarify that the “supplier of the tread used for the retreading process” is responsible for conformity of production of the supplied tread, Align the classification “traction tyre” with UN R117 Provide transitional provisions to manage the switch from the requirements given in paragraph 6.2.1. to the ones given in the paragraph 6.2.2., Correct the omission of provisions for “professional off-road tyre” and their alignment with UN R30,/li> Correct a reference to "Appendix 1" of the 1958 Agreement to "Schedule 1", and Manage the transition to the new standard reference test tyres (SRTTs) 19.5 and 22.5 siped
Source(s)	ETRTO
Rulemaking Area(s)	UN R172 Traction/snow retreaded tyres
Regulatory Impact	01 series of amendments
Proposal Status	Formal GR review
Meeting(s)	GRBP \| Session 83 \| 10-13 Feb 5. (f) UN Regulation No. 172 (Snow performance and traction tyre classification for retreaded tyres)
Related Documents
	GRBP-83-15/Rev.1	UN R172: Proposal to amend document GRBP/2026/10 (condensed version) \| Formal GR review	supersede?
	GRBP-83-16/Rev.1	UN R172: Proposal to amend document GRBP/2026/10 (Extended version) \| Formal GR review	supersede?
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UNECE server	.pdf format	.docx format
GAR server	.pdf format	.docx format