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UN R109: Proposal for a Supplement to the 01 series of amendments
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Reference Number: GRBP/2025/16
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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.
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Submitted by:
ETRTO
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Meeting Sessions: 81st GRBP session (18-21
Feb 2025)
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Document date: 05 Dec 24
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Document status: Superseded
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Relevant to: UN Regulation No. 109 | Retreaded Tires for Commercial Vehicles
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Click here to view the full document file
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