Michelin X Ice Xi3 245/45 R20

Michelin X Ice Xi3 is a summer tyre made in total of 6 sizes, ranging from R13 to R13 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 245/45 R20 is 20mm wider than the narrowest dimension (225) and 30mm narrower than the widest one (275). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (245mm), which results in 110.25mm sidewall height.