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255/40 R18 Firestone Firehawk Sport variants
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Firestone Firehawk Sport is a summer tyre made in total of 33 sizes, ranging from R18 to R18 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 255/40 R18 is 40mm wider than the narrowest dimension (215) and 20mm narrower than the widest one (275). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (255mm), which results in 102mm sidewall height. In 255/40 R18, there is only one possible speed index for Firestone Firehawk Sport - "Y", which is good for speeds up to 300 km/h. In 255/40 R18, Firehawk Sport usually competes against Ecsta Sport (PS72), which is a tyre from Kumho with a rating of 78%, compared to 76% of the Firestone in question.
Firestone Firehawk Sport is made in 33 sizes, starting from 215/35 R18 up to 275/35 R20.
