Summer tyre tyre width 225 mm tyre cross section 50 rim diameter 17 inch speed rating h up to 130 mph rolling resistance f wet grip b noise emission 71 db noise classification nc 2 rim protector sipe asymmetrical tread listed since 28102009 1721 rim protection marking fp mfs fr fl fsl ml rpb tyre size required 22550 r17 erstausrstung bmw