Michelin Pilot Super Sport is a summer tyre made in total of 161 sizes, ranging from R17 to R17 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 325/30 R21 is 120mm wider than the narrowest dimension (205) and -10mm narrower than the widest one (315). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (325mm), which results in 97.5mm sidewall height. In
325/30 R21, Pilot Super Sport usually competes against
SportContact 6, which is a tyre from
Continental with a rating of 0%, compared to 0% of the
Michelin in question.