Firestone Winterhawk 4 is a winter tyre made in total of 100 sizes, ranging from R14 to R14 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 225/50 R17 is 70mm wider than the narrowest dimension (155) and 50mm narrower than the widest one (275). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (225mm), which results in 112.5mm sidewall height. In 225/50 R17, there are 2 possible speed indexes for Firestone Winterhawk 4 - "H","V", which are good for speeds up to 210, 240 km/h. In 225/50 R17, Winterhawk 4 usually competes against Blizzak LM-005, which is a tyre from Bridgestone with a rating of 87%, compared to 65% of the Firestone in question. Latest test in 225/50 R17 was held by ADAC in 2021, where Winterhawk 4 received rating "Satisfactory" and finished on the 12. place. It was tested on a Audi A4.
Relevant tyre tests in same or similiar dimension (225/50 R17)
Name | Stopping distance on wet | Stopping distance on snow | |||||
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Best values in test | 31,4 | 29,2 | |||||
Firestone Winterhawk 4 | 33,9 | 31,0 | |||||
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Name | Wet | Dry | Snow | Running costs | |||
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Best values in test | 2+ | 2+ | 1 | 1- | |||
Firestone Winterhawk 4 | 2+ | 3 | 2 | 2 | |||
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Name | |||||||
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Firestone Winterhawk 4 | |||||||
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Name | Wet | Dry | Snow | Ice | Noise | Wear | |
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Best values in test | 1,6 | 1,9 | 1,5 | 2,1 | 2,7 | 1,5 | |
Firestone Winterhawk 4 | 2,1 | 3,3 | 1,9 | 2,1 | 2,9 | 2,5 | |
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