Continental WinterContact TS 860S SUV 315/45 R21

Continental WinterContact TS 860S SUV is a winter tyre made in total of 20 sizes, ranging from R18 to R18 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 315/45 R21 is 60mm wider than the narrowest dimension (255) and -30mm narrower than the widest one (285). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (315mm), which results in 141.75mm sidewall height.