Firestone Roadhawk 2 is a summer tyre made in total of 146 sizes, ranging from R16 to R16 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/35 R18 is 40mm wider than the narrowest dimension (185) and 60mm narrower than the widest one (285). This tyre profile of 35 means the sidewall height of the tyre is 35% of the tyre width (225mm), which results in 78.75mm sidewall height. In
225/35 R18, Roadhawk 2 usually competes against
Ecsta PS71, which is a tyre from
Kumho with a rating of 78%, compared to 75% of the
Firestone in question.
Summer
