30.11.2011 Official Journal of the European Union L 317/17 COMMISSION REGULATION (EU) No 1235/2011 of 29 November 2011 amending Regulation (EC) No 1222/2009 of the European Parliament and of the Council with regard to the wet grip grading of tyres, the measurement of rolling resistance and the verification procedure (Text with EEA relevance) THE EUROPEAN COMMISSION, Having regard to the Treaty on the Functioning of the European Union, Having regard to Regulation (EC) No 1222/2009 of the European Parliament and of the Council of 25 November 2009 on the labelling of tyres with respect to fuel efficiency and other essential parameters (1), and in particular Article 11(a) and () thereof, Whereas: 1 Regulation (EC) No 1222/2009 of the European Parliament and of the Council aims at establishing a framework for the provision of harmonised information on tyre parameters through labelling, allowing end-users to make an informed choice when purchasing tyres. The rolling resistance of tyres determines their fuel effi- ciency grading. Measurement of rolling resistance must be reproducible; tests on the same tyres in different laboratories must produce the same results in order to ensure a fair comparison between tyres from different suppliers. In addition, a good reproducibility of testing results prevents market surveillance authorities from obtaining different results from those of the suppliers when testing the same tyres. A procedure for the alignment of test laboratories with regard to the measurement of rolling resistance would improve the reproducibility of the testing results. Since a suitable harmonised testing method of grip on wet roads has been developed at ISO level, a wet grip grading of C2 and C3 tyres should now be introduced, in accordance with Article 11 (a) of Regulation (EC) No 1222/20009. The clarity of the conformity verification procedure set out in Annex IV of Regulation (EC) No 1222/2009 should be improved by introducing thresholds according to which the declared values used for the labelling requirements are considered to be in compliance with that Regulation. () OJ L 342, 22.12.2009, p. 46. (6) Regulation (EC) No 1222/2009 should therefore be amended accordingly. The measures provided for in this Regulation are in accordance with the opinion of the Committee estab- lished by Article 13 of Regulation (EC) No 1222/2009, HAS ADOPTED THIS REGULATION: Article 1 Amendment to Regulation (EC) No 12222009 Regulation (EC) No 1222/2009 is amended as follows: (1) Annex I, part A: Fuel efficiency classes, the first sentence is replaced by the following: ‘The fuel efficiency class must be determined on the basis of the rolling resistance coefficient (RRC) according to the “A” to “G” scale specified below and measured in accordance with Annex 6 of UNECE Regulation No 117 and its subsequent amendments and aligned according to the procedure laid down in Annex IVa); in Annex I, part B: Wet grip classes, the text and table are replaced by the following: ‘1. The wet grip class of C1 tyres must be determined on the basis of the wet grip index (G) according to the “A” to “G” scale specified in the table below, calculated in accordance with point 3 and measured in accordance with Annex V. The wet grip class of C2 and C3 tyres must be determined on the basis of the wet grip index (G) according to the “A” to “G” scale specified in the table below, calculated in accordance with point (3) and measured in accordance with ISO 15222:2011 whereby the following Standard Reference Test Tyres (SRTT) must be used: (i) for C2 tyres, the SRTT 225/75R 16 C, ASTM F 2872-11; (ii) for C3 tyres having Nominal Section Width lower than 285 mm, the SRTT 245/70R19.5, ASTM F 2871-11;