Firestone Roadhawk 195/50 R15

Firestone Roadhawk is a summer tyre made in total of 165 sizes, ranging from R15 to R15 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 195/50 R15 is 30mm wider than the narrowest dimension (165) and 100mm narrower than the widest one (295). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (195mm), which results in 97.5mm sidewall height. In 195/50 R15, Roadhawk usually competes against Summer, which is a tyre from Cooper with a rating of 55%, compared to 52% of the Firestone in question.