Cooper Zeon CS8 is a summer tyre made in total of 147 sizes, ranging from R15 to R15 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 215/40 R17 is 30mm wider than the narrowest dimension (185) and 40mm narrower than the widest one (255). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (215mm), which results in 86mm sidewall height. In
215/40 R17, Zeon CS8 usually competes against
Bravuris 5 HM, which is a tyre from
Barum with a rating of 25%, compared to 28% of the
Cooper in question.