Michelin CrossClimate+ (!) is a summer tyre made in total of 0 sizes, ranging from R13 to R13 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 245/45 R18 is 245mm wider than the narrowest dimension () and -245mm narrower than the widest one (). 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. In 245/45 R18, CrossClimate+ (!) usually competes against , which is a tyre from with a rating of %, compared to 0% of the Michelin in question.