European Tyre and Rim Technical Organisation
15 Feb 2010 Torque Influence on C3 category tyres: R117.02 should not be overruled by R51.03 (ETRTO) GRB-51-13 2010-02-15 ETRTO
25 Jan 2011 ETRTO comments to TNO Venoliva Final Draft report (ETRTO) GRB-53-01 2011-01-25 ETRTO
3 Sep 2012 ETRTO remarks on document GRB/2012/8 (ETRTO) GRB-56-16 2012-09-03 ETRTO remarks concering the consolidated version of the proposed 03 series of amendments to UN R51, including OICA remarks on updating references to Annex 9 and concerning the Annex 2 qualification of the vehicle to be tested in each instance. ETRTO
21 Jan 2021 ETRTO Tyre Performance Study (ETRTO) GRBP-73-11 2021-01-21 Overview of UTAC CERAM testing designed to consider the impact of additional tightening of tyre performance limits on the balance between legal requirements (rolling resistance, wet grip and rolling sound emission) and other performance aspects not subject to legal requirements. ETRTO
29 Nov 2020 UN R51: Effects of Tyre Temperature/Aging on noise measurements (ETRTO) TFMU-07-02 2020-11-29 ETRTO
13 Jul 2021 UN R51: Remark on temperature correction (ETRTO) TFMU-13-04 2021-07-13 ETRTO
17 Nov 2021 UN R51: Input on draft Supplement 8 to the 03 series of amendments (ETRTO) Session 14.75-04 2021-11-17 ETRTO