ETRTO comments on GRB-60-08, GRB-60-12, GRB-60-14-Rev.1 and GRB-61-03
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Reference Number: GRB-61-18
Origin: ETRTO
Date: 29 January 2015
Related Documents:
GRB-60-08 | Tyre noise limits of EC/661/2009 and ECE R117: Evaluation based on sold tyres in the Netherlands
GRB-60-08/Add.1 | Shifts in tyre sound levels between 2007 and 2013 (Addendum)
GRB-60-12 | Shifts in tyre sound levels between 2007 and 2013
GRB-60-14/Rev.1 | Triple-A tyres – benefits for environment, noise, safety and economy
GRB-61-03 | Possible future tyre noise limits
GRB-61-03/Add.1 | Possible future tyre noise limits (presentation)
GRB-62-17 | Comments on tyre noise performance and proposal for higher stringecy
Discussion(s):
Working Party on Noise | Session 61 | 27-29 Jan 2015

18. The expert from the Netherlands recalled the two studies presented at the previous session of GRB and introduced further arguments for tightening tyre noise limits in Regulation No. 117, together with the text of draft amendments (GRB-61-03 and Add.1). The expert from ETRTO questioned if the pool of tyres selected for the Dutch studies had indeed been a representative sample (GRB-61-18). He further pointed out that, for the time being, the tyre industry was busy meeting the requirements of 02 series of amendments to Regulation No. 117 which had recently come into force, in November 2012. According to him, until the completion of this process by 2018-2020, it would be premature to consider further reducing of tyre noise limits. The experts from China, Norway and Switzerland agreed that the proposal by the Netherlands needed further study. The experts from France and Germany pointed out various problems with labelling of tyres. GRB invited experts to provide their comments on the Dutch proposal and decided to revert to this issue at the next session on the basis of a new informal document containing the draft amendment proposals tabled by the expert from the Netherlands in GRB-61-03.