Superia Bluewin UHP is a winter tyre made in total of 41 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 40mm wider than the narrowest dimension (185) and 20mm narrower than the widest one (245). 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, Bluewin UHP usually competes against
Winter Sport 5, which is a tyre from
Dunlop with a rating of 86%, compared to 1% of the
Superia in question.
