Firestone Winterhawk 3 is a winter tyre made in total of 66 sizes, ranging from R13 to R13 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 185/65 R15 is 30mm wider than the narrowest dimension (155) and 60mm narrower than the widest one (245). This tyre profile of 65 means the sidewall height of the tyre is 65% of the tyre width (185mm), which results in 120.25mm sidewall height. In 185/65 R15, there is only one possible speed index for Firestone Winterhawk 3 - "T", which is good for speeds up to 190 km/h. In 185/65 R15, Winterhawk 3 usually competes against Wintercraft Wp52, which is a tyre from Kumho with a rating of 61%, compared to 0% of the Firestone in question. Latest test in 185/65 R15 was held by Autozeitung in 2015, where Winterhawk 3 received rating "" and finished on the 9. place. It was tested on a .
