Summer tyre tyre width 225 mm tyre cross section 55 rim diameter 16 inch speed rating y up to 186 mph rolling resistance b wet grip b noise emission 72 db noise classification nc 2 rim protector sipes 3d grooves asymmetrical tread listed since 29052009 1751 rim protection marking fp mfs fr fl fsl ml rpb tyre size required 22555 r16 erstausrstung mercedes