Uniroyal RAINEXPERT 5 is a summer tyre made in total of 64 sizes, ranging from R14 to R14 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 165/65 R15 is 10mm wider than the narrowest dimension (155) and 90mm narrower than the widest one (255). This tyre profile of 65 means the sidewall height of the tyre is 65% of the tyre width (165mm), which results in 107.25mm sidewall height. In 165/65 R15, there is only one possible speed index for Uniroyal RAINEXPERT 5 - "T", which is good for speeds up to 190 km/h. In 165/65 R15, RAINEXPERT 5 usually competes against CS7, which is a tyre from Cooper with a rating of 37%, compared to 58% of the Uniroyal in question.