Michelin Pilot Sport 4S is a summer tyre made in total of 51 sizes, ranging from R17 to R17 - this particular dimension is R23, which means it fits to a 23 inch/584.2mm diameter wheel. 285/40 R23 is 60mm wider than the narrowest dimension (225) and 40mm narrower than the widest one (325). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (285mm), which results in 114mm sidewall height.
Summer
