29 Feb 2016 UN R0 Pretesting: Issue Report concerning "Paragraph "6.6.1. Tyre/wheel combination" (Germany and KBA) SGR0-19-17 2016-02-29 Tyre rolling resistance falls outside the scope of UN R0 because this attribute is used in the calculation of C02 emissions and IWVTA does not include UN R83 or UN R101. Germany KBA