Cooper Discoverer Winter 225/40 R18

Cooper Discoverer Winter is a winter tyre made in total of 91 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 20mm wider than the narrowest dimension (205) and 70mm narrower than the widest one (295). 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 Winter usually competes against BluEarth winter V905, which is a tyre from Yokohama with a rating of 0%, compared to 0% of the Cooper in question.