Firestone Winterhawk 3 is a winter tyre made in total of 64 sizes, ranging from R13 to R13 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 185/60 R15 is 30mm wider than the narrowest dimension (155) and 60mm narrower than the widest one (245). This tyre profile of 60 means the sidewall height of the tyre is 60% of the tyre width (185mm), which results in 111mm sidewall height. In 185/60 R15, there is only one possible speed index for Firestone Winterhawk 3 - "T", which is good for speeds up to 190 km/h. In 185/60 R15, Winterhawk 3 usually competes against WinterExpert, which is a tyre from Uniroyal with a rating of 64%, compared to 0% of the Firestone in question. Latest test in 185/60 R15 was held by Autobild in 2015, where Winterhawk 3 received rating "Recommended" and finished on the 14. place. It was tested on a .
