International Organization of Motor Vehicle Manufacturers
19 Sep 2012 Proposal for amendments to document GRRF/2012/22 (OICA) GRRF-73-25 2012-09-19 Proposal to define the relief depth of tire markings and an editorial correction concerning the permissible tire marking fonts. OICA
19 Oct 2010 Font for Tyre Identification Number (OICA) TYREGTR-09-05 2010-10-19 OICA
22 Dec 2011 Proposal on the font for the Tire Identification Number in the draft GTR on Tires (OICA) TYREGTR-12-03 2011-12-22 OICA
24 May 2012 Font for Tyre Identification Number (OICA) TYREGTR-13-04 2012-05-24 Lastest version of the draft provisions concerning tire markings, addressing in particular both human and "Optical Character Recognition" legibility. OICA