Continental PremiumContact C 275/40 R20

Continental PremiumContact C is a summer tyre made in total of 41 sizes, ranging from R17 to R17 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 275/40 R20 is 60mm wider than the narrowest dimension (215) and 10mm narrower than the widest one (285). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (275mm), which results in 110mm sidewall height.