Michelin Pilot Sport 4 SUV is a summer tyre made in total of 118 sizes, ranging from R17 to R17 - this particular dimension is R23, which means it fits to a 23 inch/584.2mm diameter wheel. 275/35 R23 is 50mm wider than the narrowest dimension (225) and 60mm narrower than the widest one (335). 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. In 275/35 R23, there is only one possible speed index for Michelin Pilot Sport 4 SUV - "Y", which is good for speeds up to 300 km/h.