Michelin Pilot Sport 4 245/45 R21

Michelin Pilot Sport 4 is a summer tyre made in total of 185 sizes, ranging from R16 to R16 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 245/45 R21 is 40mm wider than the narrowest dimension (205) and 80mm narrower than the widest one (325). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (245mm), which results in 110.25mm sidewall height. In 245/45 R21, Pilot Sport 4 usually competes against P ZERO PZ4, which is a tyre from Pirelli with a rating of 89%, compared to 0% of the Michelin in question.