Firestone Roadhawk is a summer tyre made in total of 154 sizes, ranging from R15 to R15 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 215/55 R17 is 50mm wider than the narrowest dimension (165) and 80mm narrower than the widest one (295). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (215mm), which results in 118.25mm sidewall height. In 215/55 R17, there is only one possible speed index for Firestone Roadhawk - "W", which is good for speeds up to 270 km/h. In 215/55 R17, Roadhawk usually competes against RainSport 5, which is a tyre from Uniroyal with a rating of 62%, compared to 57% of the Firestone in question. Latest test in 215/55 R17 was held by ACE in 2020, where Roadhawk received rating "Conditionally recommended" and finished on the 7. place. It was tested on a Audi Q2.
