Firestone Fd600 225/75 R17.5

Firestone Fd600 is a allround tyre made in total of 7 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/75 R17.5 is 215mm wider than the narrowest dimension (10) and -213mm narrower than the widest one (12). This tyre profile of 75 means the sidewall height of the tyre is 75% of the tyre width (225mm), which results in 168.75mm sidewall height.