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Tyre Rolling Resistance.

Informal document No. GRRF-56-27 (56th GRRF, 20-22 September 2004, agenda item 6.3.). Tyre Rolling Resistance. ETRTO activity. Considering that :

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Tyre Rolling Resistance.

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  1. Informal document No.GRRF-56-27 (56th GRRF, 20-22 September 2004, agenda item 6.3.) Tyre Rolling Resistance. ETRTO activity.

  2. Considering that : • It is not possible to build any regulation or international cooperation on tyres’ rolling resistance without having got the definition of an agreed measurement method beforehand. • There is not any International Standard for tyre rolling resistance measurement allowing direct precise comparisons. (*) A working group (WG) was created by ETRTO from its members. (*) ISO 18164 allows a lot of degrees of freedom, which make results differ significantly accord ing to the selected options.

  3. The main objectives of this WG are : • To define a Reference Method for Rolling Resistance Measurement based on ISO 18164 norm, in particular for regulation and international cooperation purposes. • To specify how the other existing methods will correlate. • To establish a state of the art for passenger car and truck tyres’ rolling resistance in Europe. This WG has to work in close relationship with • ISO/TC31 who is building ISO 18164 norm on RR measurement. • The Russian Federation who is proposing an amendment to ISO 18164.

  4. Action Plan

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