Proposal to add specifications for tyre sizes 33×11.50R20LT, 35×11.50R17LT, 37×13.50R26LT, 36×15.50R20LT and 40×15.50R26LT.

Revised proposal to correct the paragraph numbering pursuant to the adoption of Supplement 21 and delete a redundant note at the end of paragraph 6.1.5.3.3, based on document GRRF/2016/35.

Correction of the paragraph numbering pursuant to the adoption of Supplement 21 and deletion of a redundant note at the end of paragraph 6.1.5.3.3.

Proposal to clarify the minimum heights for markings for tyres with nominal rim diameter codes ≥ 20 and nominal section width ≤ 235 and for tyres with nominal rim diameter codes < 20 and nominal section width > 235. In addition, the proposal corrects the use of uppercase letters to denote dimensions where lowercase letters had been inserted.

Proposal to:

• correct the code 19 rim diameter, amend the tyre dimension requirements,
• modify the marking requirements to replace PSI with kilopascals (“kPa”),
• change the measurement units for drum speed from min-1 to km.h-1 and align the wording in Annex 7, Appendix 1 with the text of the Regulation,
• add new tyre sizes to Annex 5, allow for special tyres that can also be used as snow tyres to be marked with the inscription M+S, M.S, or M&S while remaining in the category of use “special”,
• align definitions and content with the other tyre regulations (UN Regulations Nos. 30, 117, 75 etc.),
• include a definition of “manufacturer” extracted from the resolution “R.E.3”
• adopt a common definition and use of the terms “Manufacturer’s name”, “Brand name”, “Trademark”, “Trade description” and “Commercial name” and their links, and
• add information in the certificate to enable approval authorities to more easily understand the products the certificate addresses.

Proposal to clarify the provisions for the minimum heights of markings for tyres with nominal rim diameter codes ≥ 20 and nominal section width ≤ 235 and for tyres with nominal rim diameter codes < 20 and nominal section width > 235. In addition, the proposal aligns the table on minimum marking heights to correspond with the related figure by using lowercase letters to denote dimensions in both (currently, the figure uses lowercase, but the table uses uppercase).