Quote:
Originally Posted by Ralph123x
In that case, I'll stick with stock 255/40 in the rear. But from what you said, isn't the front better at stock 225/45 too? 245 will not provide much more grip and will have a lot less sidewall protection. Or maybe I understood it wrong
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you understood correctly, however from my own experience, leaving the 255/40/18 at the rear but increasing the front from 225/45/18 to 245/40/18 balances the front and rear grip levels to an almost square set up. imo with 245 up front, understeer of the 225/255 stagger is reduced and it won't push, so you can take a given turn at higher speed.
based on your situation, i feel you'll be quite pleased 245/40/18+255/40/18 vs the OEM sized combo of 225/45/18+255/40/18
this thread, same scenario with OEM 19", 225/40/19 to 245/35/19
https://f30.bimmerpost.com/forums/sh....php?t=1678451
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