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| Document Title | Shifts in tyre sound levels between 2007 and 2013 (Addendum) | ||||||||
| Reference Number | GRB-60-08/Add.1 | ||||||||
| Date |
16 Sep 2014
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| Source(s) | M+P and Netherlands | ||||||||
| Rulemaking Area(s) | UN R117 Tire Noise, Wet Adhesion, and Rolling Resistance | ||||||||
| Meeting(s) | |||||||||
| 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| GRB-62-11 | Proposal for amendments to the 02 series of amendments to Regulation 117 (superseded) | ||||||||
| GRB-62-17 | Comments on tyre noise performance and proposal for higher stringecy | ||||||||
| Downloads | |||||||||
| UNECE server | .pdf format | .pptx format | |||||||
| Excerpts from session reports related to this document | |||||||||
| GRB | 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. 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. |
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