Shifts in tyre sound levels between 2007 and 2013 (Addendum)
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Reference Number: GRB-60-08/Add.1
Origin: M+P and Netherlands
Date: 1 September 2014
Related Documents:
GRB-60-08 | Tyre noise limits of EC/661/2009 and ECE R117: Evaluation based on sold tyres in the Netherlands
GRB-61-18 | ETRTO comments on GRB-60-08, GRB-60-12, GRB-60-14-Rev.1 and GRB-61-03
GRB-62-11 | Proposal for amendments to the 02 series of amendments to Regulation 117
GRB-62-17 | Comments on tyre noise performance and proposal for higher stringecy
Working Party on Noise | Session 60 | 1-3 Sep 2014

14. The expert from the Netherlands presented the outcome of a study (GRB-60-08 and Add.1) of the shifts in tyre sound emission levels in his country between 2007 and 2013, i.e. before and after the revision of tyre noise limits in 2009 (EC/661/2009 and UN Regulation No. 117). The study addressed the most common C1, C2 and C3 tyres in terms of size and manufacturer. The reductions in tyre sound levels between 2007 and 2013 were found to be respectively 1.5, 1.4 and 1.1 dB(A) for C1, C2 and C3 tyres.