Firestone Winterhawk 4 is a winter tyre made in total of 100 sizes, ranging from R14 to R14 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 245/45 R18 is 90mm wider than the narrowest dimension (155) and 30mm narrower than the widest one (275). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (245mm), which results in 110.25mm sidewall height. In 245/45 R18, there is only one possible speed index for Firestone Winterhawk 4 - "V", which is good for speeds up to 240 km/h. In 245/45 R18, Winterhawk 4 usually competes against WR D4, which is a tyre from Nokian with a rating of 54%, compared to 69% of the Firestone in question.
Relevant tyre tests in same or similiar dimension (245/45 R18)
Name | Wet | Dry | Snow | Rolling resistance | Noise | ||
---|---|---|---|---|---|---|---|
Best values in test | 9,3 | 9,4 | 10 | 10 | 10 | ||
Firestone Winterhawk 4 | 6,4 | 6,7 | 8,9 | 8 | 8 | ||
Show test details |