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285/30 R20 Michelin Pilot Sport 4S variants
Michelin Pilot Sport 4S is a summer tyre made in total of 34 sizes, ranging from R18 to R18 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 285/30 R20 is 30mm wider than the narrowest dimension (255) and 40mm narrower than the widest one (325). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (285mm), which results in 85.5mm sidewall height. In 285/30 R20, there is only one possible speed index for Michelin Pilot Sport 4S - "Y", which is good for speeds up to 300 km/h.
Michelin Pilot Sport 4S is made in 34 sizes, starting from 255/35 R18 up to 325/35 R23.