Originally Posted by mdaniels4
FWIW, I think the profile diff between F and R, 40-30 is too great, makes it look a bit out of place. My plan is 235/40/18 F, 285/35-19 R, and my NA is completely stock too.
SRT SIX is right.
A 225 width tire and a ratio of 40 is 90.00 mm sidewall height.
A 235 width tire and a ratio of 40 is 94.00 mm sidewall height.
A 275 width tire and a ratio of 30 is 82.50 mm sidewall height
A 275 width tire and a ratio of 35 is 96.25 mm sidewall height.
A 285 width tire and a ratio of 35 is 99.75 mm sidewall height
A 285 width tire and a ratio of 30 is 85.50 mm sidewall height
OP, have you tried using this tool:
https://www.crossfireforum.org/forum...ment-tool.html
It will help you see what fits.