Michelin PILOT ALPIN 5 SUV 255/40 R21

Michelin PILOT ALPIN 5 SUV is a winter tyre made in total of 118 sizes, ranging from R17 to R17 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 255/40 R21 is 30mm wider than the narrowest dimension (225) and 60mm narrower than the widest one (315). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (255mm), which results in 102mm sidewall height. In 255/40 R21, PILOT ALPIN 5 SUV usually competes against WinterContact TS 870 P, which is a tyre from Continental with a rating of 94%, compared to 94% of the Michelin in question.