Firestone Winterhawk 4 185/55 R15

Firestone Winterhawk 4 is a winter tyre made in total of 102 sizes, ranging from R14 to R14 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 185/55 R15 is 30mm wider than the narrowest dimension (155) and 90mm narrower than the widest one (275). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (185mm), which results in 101.75mm sidewall height. In 185/55 R15, Winterhawk 4 usually competes against Blizzak LM-005, which is a tyre from Bridgestone with a rating of 82%, compared to 56% of the Firestone in question.