Winter tyres tyre width 205 mm tyre cross section 55 rim diameter 16 inch load index 91 up to 615 kg speed rating h up to 130 mph installation all round tyre rolling resistance e wet grip f noise emission 72 db noise classification nc 2 rim protector sipe asymmetrical tread runflat identification rft bridgestone run flat technology rft run flat tyres rim protection marking fp mfs fr fl fsl ml rpb erstausrstung bmw