Firestone Firehawk Sport 225/45 R18

Firestone Firehawk Sport is a summer tyre made in total of 36 sizes, ranging from R18 to R18 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/45 R18 is 10mm wider than the narrowest dimension (215) and 50mm narrower than the widest one (275). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (225mm), which results in 101.25mm sidewall height. In 225/45 R18, Firehawk Sport usually competes against Roadhawk 2, which is a tyre from Firestone with a rating of 81%, compared to 78% of the Firestone in question.