Quote:
Originally Posted by Glitchy86
Can someone pls advise me if I can put 245/45R17 without fuckin my gearing ratio coz I cant seem to find 245/40R17 where I live. My wheel size ia 17×9 +38
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Generally speaking, a diameter difference of + or - 3% is acceptable.
215/45/17 is 24.6" diameter (stock size)
225/45/17 is 25.0" diameter +1.6%
235/45/17 is 25.3" diameter +2.8%
255/40/17 is 25.0" diameter +1.6%
245/45/17 is 25.7" diameter +4.5%
For size comparison, in the pics above of the 275/35/18 on the rear has a diameter of 25.6"
I have seen a few guys run a 245/45/17 without rubbing on a 17X9 +38. (rubbing will also depend on how much you are lowered)
It will change your gearing though. For DD, I don't think it would be that bad. For track, 245/45/17 is not ideal.