Cooper Zeon 4XS Sport 225/55 R18

Cooper Zeon 4XS Sport is a summer tyre made in total of 165 sizes, ranging from R13 to R13 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/55 R18 is 10mm wider than the narrowest dimension (215) and 70mm narrower than the widest one (295). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (225mm), which results in 123.75mm sidewall height. In 225/55 R18, Zeon 4XS Sport usually competes against Roadhawk, which is a tyre from Firestone with a rating of 60%, compared to 49% of the Cooper in question.