Firestone Winterhawk 3 is a winter tyre made in total of 64 sizes, ranging from R13 to R13 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 255/45 R19 is 100mm wider than the narrowest dimension (155) and -10mm narrower than the widest one (245). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (255mm), which results in 114.75mm sidewall height. In 255/45 R19, 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.
255/45 R19 is found on 5 vehicles: