Working Party on Brakes and Running Gear
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13-15 Sep 2011  · Geneva
Filtered: UN R117 Tire Noise, Wet Adhesion, and Rolling Resistance Remove filter
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16 Sep 2011 GRRF-71-31 Proposal for amendments to Regulations N° 30, 54 and 117 14 Sep 2011 GRRF-71-29 Amendments to the 02 series of amendments to Regulation No. 117 6 Sep 2011 GRRF-71-12 New Snow Test Method for Tyre Class C3 6 Sep 2011 GRRF-71-11 New Snow Test Method for Tyre Class C2 6 Sep 2011 GRRF-71-10 Testing method for measuring the wet grip index of C1 tyres