Semperit Speed-Life 3 is a summer tyre made in total of 116 sizes, ranging from R15 to R15 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 255/55 R18 is 90mm wider than the narrowest dimension (165) and 40mm narrower than the widest one (295). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (255mm), which results in 140.25mm sidewall height. In
255/55 R18, Speed-Life 3 usually competes against
Roadhawk, which is a tyre from
Firestone with a rating of 52%, compared to 51% of the
Semperit in question.
Summer
