Federal Evoluzion ST-1 is a summer tyre made in total of 61 sizes, ranging from R13 to R13 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 235/40 R19 is 40mm wider than the narrowest dimension (195) and 40mm narrower than the widest one (275). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (235mm), which results in 94mm sidewall height. In
235/40 R19, Evoluzion ST-1 usually competes against
Protech NewGen, which is a tyre from
Viking with a rating of 40%, compared to 48% of the
Federal in question.
