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275/45 R20 Firestone Winterhawk 4 variants
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Firestone Winterhawk 4 is a winter tyre made in total of 100 sizes, ranging from R14 to R14 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 275/45 R20 is 120mm wider than the narrowest dimension (155) and 0mm narrower than the widest one (275). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (275mm), which results in 123.75mm sidewall height. In 275/45 R20, there is only one possible speed index for Firestone Winterhawk 4 - "V", which is good for speeds up to 240 km/h. In 275/45 R20, Winterhawk 4 usually competes against Blizzak LM-005, which is a tyre from Bridgestone with a rating of 88%, compared to 60% of the Firestone in question.
Firestone Winterhawk 4 is made in 100 sizes, starting from 155/65 R14 up to 275/45 R20.
