Cooper Zeon 4XS Sport is a summer tyre made in total of 146 sizes, ranging from R16 to R16 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/45 R20 is 40mm wider than the narrowest dimension (215) and 40mm narrower than the widest one (295). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (255mm), which results in 114.75mm sidewall height. In
255/45 R20, Zeon 4XS Sport usually competes against
Dynaxer HP5, which is a tyre from
Kleber with a rating of 51%, compared to 37% of the
Cooper in question.
Summer
