04 July 2010

ECE R117.02 upgrade

R117.02 タイヤ単体騒音
Tyre rolling noise, wet grip adhesion and rolling resistance, upgrade to 02


ころがり抵抗、濡れた路面での粘着係数の要件が追加

Addition of requirement of rolling resistance and to new pneumatic tyres of Class C1 with regard to adhesion performance on wet surfaces (wet adhesion)

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