Uniroyal RainSport 5 225/40 R18

Uniroyal RainSport 5 is a summer tyre made in total of 136 sizes, ranging from R15 to R15 - 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 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, RainSport 5 usually competes against Goodrich Advantage 2, which is a tyre from BF with a rating of 61%, compared to 65% of the Uniroyal in question.