285/45 R21 Bridgestone Potenza Sport variants

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Bridgestone Potenza Sport is a summer tyre made in total of 133 sizes, ranging from R17 to R17 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 285/45 R21 is 80mm wider than the narrowest dimension (205) and 0mm narrower than the widest one (285). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (285mm), which results in 128.25mm sidewall height. In 285/45 R21, Potenza Sport usually competes against Pilot Sport 4 S, which is a tyre from Michelin with a rating of 86%, compared to 89% of the Bridgestone in question.