Proposal for Supplement 19 to the original series of amendments to UN Regulation No. 75 (Tyres for L-category vehicles)
Documentation
WP.29/2021/6
UN R75: Proposal for Supplement 19
UN R75: Proposal for Supplement 19
Proposal to
Change the definition of the tyre size designation by including prefixes and suffixes as well as the code for the tyre structure
Clarify the use of sizes listed in Annex 5
Move the definition of “reinforced” into a paragraph that is not subordinated to the definition of “Structure of a tyre”
Correct references and typographical errors
Rearrange paragraphs and amendments in order to increase readability
Delete an unnecessary cross-reference to UN Regulation No. 54
Change the definition of “bias-belted”
Amend the definition of “snow tyres” by replacing “ordinary (road-type) tyres” (which is not defined) by “normal tyre”, removing the note that snow tyres generally have more widely spaced ribs or blocks
Include a general provision addressing the gap between the effective date of entry into force and the date of notification of the adoption of the Supplement to the Contracting Parties
Keep the restriction of measurement of overall diameter after load/speed test only to diagonal tyres (For radial the variation of outer diameter of the tyre, measured six hours after the load/speed performance test as specified in paragraph 2 of Annex 7, is far below ±3.5 per cent from the outer diameter as measured before the test.)
Remove use of the word “moulding”
Resolve conflicting provisions in Annex 2 concerning the minimum size of the approval mark
Clarify that mounting motorcycle tyres on motorcycle rims is the standard configuration and that “M/C” marking is optional for the sizes listed in Annex 5.
This proposal (WP.29/2021/6) was adopted by the World Forum. Thirty-three Contracting Parties out of the 47 applying UN R75 were present for the vote by AC.1. Thirty-three voted in favor with zero against and zero abstaining.