GAR | GRBP/2025/17

Document Title	UN R172: Proposal for Supplement 1
Reference Number	GRBP/2025/17
Date	5 Dec 2024
Summary	Proposal to: Add new reference tyres C3 SRTTs 19.5 and 22.5 siped and related transitional provisions Simplify the wording of the requirements for professional off-road tyres Make editorial corrections where needed throughout the text.
Source(s)	ETRTO
Rulemaking Area(s)	UN R172 Traction/snow retreaded tyres
Proposal Status	Superseded
Meeting(s)	GRBP \| Session 81 \| 18-21 Feb 6. (h) UN Regulation No. 172 (Snow performance of retreaded tyres and classification as traction tyre)
Related Documents
	GRBP-81-27/Rev.2	UN R172: Proposal to supersede document GRBP/2025/17 \| Superseded	change status?
	WP.29/2025/78	UN R172: Proposal for Supplement 1 \| Adopted	supersede?
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