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Document title
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UN R30: Proposal for Supplement 27 to the 02 series of amendments
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Date
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4 Dec 2024
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Proposal to: - Update reference to ISO 4000-1:2024 (published in March 2024)
- Clarify the structure indication within the tyre size designation for run flat or self-supporting tyres suitable for speeds in excess of 240 km/h (inscription “ZRF”)
- Clarify the nominal rim diameter.
- Amend the definition of principal grooves by eliminating the circular reference between this definition and the position of tread wear indicators.
- Introduce definition of tread depth (used in the requirements for special use and professional off-road tyres)
- Clarify the calculation of tyre section width
- Claify the Dmax requirement for snow tyres.
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Source(s)
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ETRTO
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Status
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Superseded
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Rulemaking area(s)
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Meeting(s)
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Related documents
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GRBP-81-05/Rev.1
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UN R30: Proposal to supersede document GRBP/2025/9 (Superseded)
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GRBP-81-13/Rev.1
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Supporting material for ETRTO working documents
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WP.29/2025/68
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UN R30: Proposal for Supplement 27 to the 02 series of amendments (Adopted)
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Downloads:
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UNECE server
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.pdf format
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.docx format
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GAR server
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