WP.29/2026/99
UN R172: Proposal for a Supplement 2
Source(s)
GRBP
Date
9 Apr 2026
Status
Adopted by WP.29
Subject
Impact
Original text | Supplement 2
Meeting(s)

Proposal to amend paragraph 2.2. to clarify the definition of “Supplier of the tread used for retreading process”; insert new subparagraph (a) in paragraph 6.4. establishing requirements for class C1 tyres; renumber former subparagraphs (a) and (b) as (b) and ©; replace “Appendix 1” with “Schedule 1” in paragraph 8.; amend paragraph 12.1. concerning type approvals as from 1 September 2030; amend paragraph 12.3. regarding acceptance of existing type approvals of class C3 tyres; and amend Annex 1 regarding communication of type approval for retreaded tyres.

Downloads
UNECE server
Related documents
GRBP/2026/11
UN R172: Proposal for Supplement 2 (Superseded)
GRBP-83-17
UN R172: Proposal to amend document GRBP/2026/11 (condensed version) (Superseded)
GRBP-83-18
UN R172: Proposal to amend document GRBP/2026/11 (extended version) (Superseded)
Excerpts from session reports
GRBP | Session 83 | 10-13 Feb

31. The representative of ETRTO introduced ECE/TRANS/WP.29/GRBP/2026/11, as amended by GRBP-83-17, as shortened version, and GRBP-83-18, as expanded version.
32. Following clarifications on transitional provisions raised the representative of the UK, GRBP adopted GRBP-83-18, entrusted the secretariat to make it as short as possible, and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at the June 2026 sessions as draft Supplement 2 to UN Regulation No. 172.

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