Michelin CrossClimate 2 SUV is a allround tyre made in total of 55 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 265/60 R18 is 40mm wider than the narrowest dimension (225) and 10mm narrower than the widest one (275). This tyre profile of 60 means the sidewall height of the tyre is 60% of the tyre width (265mm), which results in 159mm sidewall height.