GAR | GRBP-78-31

Retreaded tyres: Proposal for a new UN Regulation

Document GRBP-78-31

25 August 2023

78th GRBP session (30 Aug-1 Sep 2023)

Proposal from a small group effort for uniform provisions concerning the approval of pre-cured tread materials which are used for producing retreaded tyres or the approval of retreaded tyres produced by using mould cure process with regard to their snow performance.

Submitted by BIPAVER, ETRTO, France, and Netherlands

Status: Informal GR review

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Previous Documents, Discussions, and Outcomes

78th GRBP session (30 Aug-1 Sep 2023)

7. (f) | Other UN Regulations on tyres

31. The expert from the small group on retreaded tyres reported on their activities (GRBP-78-29) and briefly introduced the solution envisaged by the group:

Adoption of a new UN Regulation for type approval of retreaded tyres with regard to their snow performance without changing the technical requirements compared to the current text of UN Regulation No. 109 (GRBP-78-31), and
Adoption of a new 01 series of amendment to UN Regulation No. 109 without the snow performance, with the aim to clarify the administrative requirements after a certain period with adequate transitional provisions (GRBP-78-30).

32. GRBP invited all experts to study both options and to provide their feedback to the small group on retreaded tyres, with a view to preparing for the next session a working document which would contain a draft new UN Regulation and amendments to both UN Regulations Nos. 108 and 109.

Reference Number:	WP.29/2025/2
Meeting Session(s):	195th WP.29 session (3-7 Mar 2025)
Document date:	24 Dec 24
Document status:	Formal WP.29 review
Regarding:	Communications/Connectivity

Reference Number:	EVE-79-05
Meeting Session(s):	79th EVE session (17 Dec)
Document date:	23 Dec 24
Regarding:	GTR No. 21 EV Power Determination \| GTR No. 22 EV Battery Durability \| HD EV Battery Durability

Reference Number:	VIAQ-30-09
Meeting Session(s):	30th VIAQ session (11 Oct)
Document date:	23 Dec 24
Regarding:	MR 3: VIAQ

Reference Number:	WT-64-03
Meeting Session(s):	64th WT session (16 Dec)
Document date:	22 Dec 24
Regarding:	UN R117 Tire Noise, Wet Adhesion, and Rolling Resistance

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