Summer tyre tyre width 225 mm tyre cross section 45 rim diameter 17 inch speed rating y up to 186 mph rolling resistance c wet grip a noise emission 70 db noise classification nc 2 runflat rim protector sipes 4 longitudinal grooves asymmetrical tread unidirectional tread listed since 24052016 0927 rim protection marking fp mfs fr fl fsl ml rpb tyre size required 22545 r17