Proposal for an amendment to Regulation No. 54
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Proposal to permit the “LT” marking as a prefix or suffix to align the requirements with the current practice for C2 tyres with metric size designation. The proposed text for a prefix is in line with the latest draft of the gtr on tyres. The proposed text for a suffix is necessary for tyres designed to Japan Automobile Tyre Manufacturers Association (JATMA) standards.

Reference Number: GRRF/2015/6
Origin: ETRTO
Date: 4 December 2014
Proposal Status: Superseded
Related Documents:
WP.29/2015/66 | Proposal for Supplement 20 to Regulation No. 54
Working Party on Brakes and Running Gear | Session 79 | 16-20 Feb 2015

31. The expert from ETRTO introduced ECE/TRANS/WP.29/GRRF/2015/5, inserting in Regulation No. 54 high flotation tyres references. The expert from ETRTO presented ECE/TRANS/WP.29/GRRF/2015/6 introducing amendments to the marking requirements in Regulation No. 54. GRRF adopted both proposals and requested the secretariat to submit them to WP.29 and AC.1 for consideration and vote at their June 2015 sessions as draft Supplement 20 to Regulation No. 54.