Michelin POWER RS 240/45 R17

Michelin POWER RS is a allround tyre made in total of 9 sizes, ranging from R17 to R17 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 240/45 R17 is 100mm wider than the narrowest dimension (140) and 0mm narrower than the widest one (240). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (240mm), which results in 108mm sidewall height.