Winter tyres tyre width 235 mm tyre cross section 45 rim diameter 19 inch load index 95 up to 690 kg speed rating h up to 130 mph installation all round tyre rolling resistance e wet grip b noise emission 72 db noise classification nc 2 runflat sipes 3d rims symmetrical tread directional tread runflat identification rf zp pirelli run flat technology zp zero pressure