Michelin Pilot Sport CUP 2 is a summer tyre made in total of 138 sizes, ranging from R17 to R17 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 265/30 R20 is 50mm wider than the narrowest dimension (215) and 60mm narrower than the widest one (325). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (265mm), which results in 79.5mm sidewall height. In
265/30 R20, Pilot Sport CUP 2 usually competes against
Eagle F1 Supersport, which is a tyre from
Goodyear with a rating of 81%, compared to 79% of the
Michelin in question.