Michelin Pilot Sport PS2 315/30 R18

Michelin Pilot Sport PS2 is a summer tyre made in total of 60 sizes, ranging from R13 to R13 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 315/30 R18 is 110mm wider than the narrowest dimension (205) and -20mm narrower than the widest one (295). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (315mm), which results in 94.5mm sidewall height.