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Document Title
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UN R142: Proposal for a Supplement
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Reference Number
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GRBP/2025/14
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Date
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Summary
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Proposal to:- Add a generic reference to the Consolidated Resolution on the Construction of Vehicles (R.E.3) in footnote 1
- Align title of para. 5 with its contents (paras. 5.1. and 5.2.)
Align the title of para. 6 with corresponding paras. in UN R30, 54, 75, 106 and 117Clarify that all temporary use spare units can by composed by using tyres of any category of use- Align the snow tyre definition with UN R30, 54 and 117
- Clarify that tyres for use in severe snow conditions are also applicable to the category of use ‘special use tyres’
- Clarify which service conditions can apply the coefficient given in paragraphs 5.2.4.3.1. and 5.2.4.3.2.
- Add Class C3 tyres to the speed category symbol and load capacity index definitions
- Introduce definitions of free rolling tyre and front axle and revise markings accordingly (ref. documents GRBP-80-03 and GRBP-80-26)
- Clarify reporting the name of the symbols used for tyre for use in severe snow conditions in line with UN R117 and 164.
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Source(s)
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ETRTO
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Rulemaking Area(s)
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UN R142 Tyre Installation
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Proposal Status
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Formal GR review
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Meeting(s)
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Related Documents
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GRBP-81-10/Rev.1
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UN R142: Proposal to supersede document GRBP/2025/14
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GRBP-81-13/Rev.1
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Supporting material for ETRTO working documents
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WP.29/2025/77
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UN R142: Proposal for Supplement 2 to the 01 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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