Federal Evoluzion ST-1 285/35 R18

Federal Evoluzion ST-1 is a summer tyre made in total of 36 sizes, ranging from R16 to R16 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 285/35 R18 is 90mm wider than the narrowest dimension (195) and -10mm narrower than the widest one (275). This tyre profile of 35 means the sidewall height of the tyre is 35% of the tyre width (285mm), which results in 99.75mm sidewall height.