Michelin Pilot Sport S 5 335/30 R21

Michelin Pilot Sport S 5 is a summer tyre made in total of 38 sizes, ranging from R19 to R19 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 335/30 R21 is 110mm wider than the narrowest dimension (225) and -60mm narrower than the widest one (275). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (335mm), which results in 100.5mm sidewall height.