GAR | WP.29/2025/74

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Document Title	UN R109: Proposal for Supplement 1 to the 01 series of amendments
Reference Number	WP.29/2025/74
Date	10 Apr 2025
Summary	Proposal to: Correct the description of a tyre to exclude aspects outside the scope of UN R109 Clarify the definition of nominal rim diameter Clarify the definition of principal grooves in line with the proposal for UN R54 Amend para. 6.4.4.2. to clarify that the UN R117 certificate may be used for obtaining the type approval under UN R172 of retreaded tyres classified as traction tyre Simplify the wording of the requirements for professional off-road tyres Replace "XXX" with the UN Regulation No. 172 in the references to the approval of retreaded tyres with regard to their snow performance and/or classification as traction tyre.
Rulemaking Area(s)	UN R109 CV Retreaded Tires
Regulatory Impact	01 series of amendments \| Supplement 1
Proposal Status	Adopted by WP.29
Meeting(s)	WP.29 \| Session 196 \| 23-27 Jun 4.8.9. UN R109: Proposal for Supplement 1 to the 01 series of amendments
Related Documents
	GRBP/2025/16		UN R109: Proposal for a Supplement to the 01 series of amendments (superseded)
	GRBP-81-12/Rev.1		UN R109: Proposal to supersede document GRBP/2025/16 (superseded)
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