Michelin Pilot Sport S 5 is a summer tyre made in total of 39 sizes, ranging from R19 to R19 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 305/30 R21 is 80mm wider than the narrowest dimension (225) and -30mm narrower than the widest one (275). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (305mm), which results in 91.5mm sidewall height. In
305/30 R21, Pilot Sport S 5 usually competes against
Eagle F1 Asymmetric 5, which is a tyre from
GoodYear with a rating of 0%, compared to 0% of the
Michelin in question.
