Cooper Discoverer All Season 225/40 R18

Cooper Discoverer All Season is a allround tyre made in total of 98 sizes, ranging from R13 to R13 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/40 R18 is 50mm wider than the narrowest dimension (175) and 30mm narrower than the widest one (255). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (225mm), which results in 90mm sidewall height. In 225/40 R18, Discoverer All Season usually competes against Quatrac Pro, which is a tyre from Vredestein with a rating of 68%, compared to 20% of the Cooper in question.