Winter tyres tyre width 195 mm tyre cross section 55 rim diameter 16 inch load index 87 up to 545 kg speed rating h up to 130 mph installation all round tyre rolling resistance e wet grip c noise emission 72 db noise classification nc 2 runflat sipes symmetrical tread 3d rims directional tread self sealing tyre run flat technology rft run flat tyres erstausrstung bmw