GMW GMW14469 Tire Coast Down Noise Evaluation Procedure
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GMW GMW14469 Document Information:
Title
Tire Coast Down Noise Evaluation Procedure
GM Worldwide
Publication Date:
Oct 1, 2006
Scope:
Note: Nothing in the specification supercedes applicable laws and regulations unless specific exemption has been obtained.
Note: In the event of conflict between the English and domestic language, the English language shall take precedence.
Purpose.
Determination of tire rolling noise.
Foreword.
Due to the reduction of legal pass-by noise limits (e.g. 74 dB (A) with introduction of directive 96/20/EEC) tire noise becomes important as a major noise source.
Above Test Procedure basically corresponds to directive 92/23/EEC, however it determines tire noise at a speed of 55 km/h (mean speed according to ISO 362: 1998) and not at 80 km/h.
Applicability.
For all tires used in passenger cars, SUV (Sports Utility Vehicle) and LCV (Light Commercial Vehicle).
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