Firestone Roadhawk SUV is a summer tyre made in total of 2 sizes, ranging from R19 to R19 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/50 R20 is 20mm wider than the narrowest dimension (235) and 0mm narrower than the widest one (255). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (255mm), which results in 127.5mm sidewall height. In
255/50 R20, Roadhawk SUV usually competes against
ZV7, which is a tyre from
Avon with a rating of 12%, compared to 0% of the
Firestone in question.
