Pirelli P ZERO Corsa 275/35 R21

Pirelli P ZERO Corsa is a summer tyre made in total of 34 sizes, ranging from R19 to R19 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 275/35 R21 is 50mm wider than the narrowest dimension (225) and 50mm narrower than the widest one (325). This tyre profile of 35 means the sidewall height of the tyre is 35% of the tyre width (275mm), which results in 96.25mm sidewall height.