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265/30 R21 Pirelli P ZERO PZ4 variants
Pirelli P ZERO PZ4 is a summer tyre made in total of 338 sizes, ranging from R17 to R17 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 265/30 R21 is 40mm wider than the narrowest dimension (225) and 70mm narrower than the widest one (335). 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 R21, there is only one possible speed index for Pirelli P ZERO PZ4 - "Y", which is good for speeds up to 300 km/h.
Pirelli P ZERO PZ4 is made in 338 sizes, starting from 225/45 R17 up to 335/30 R24.