Quote:
Originally Posted by tetsuo111
No downsides at all, if you want to test the waters.
If you are doing this regularly, why?
20" rims weigh a ton, cost a bunch, and can only fit low-profile tires.
Track cars run 17" - 18" rims for good reasons - replacements are significantly less expensive and weigh POUNDS less per corner. Also, tires are consumables in this hobby, and 17" tires are a lot less to buy than 20" tires.
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The wheels might be lighter but the whole package may not make a huge difference. 513M to 437M with tires are only like 1-2 pounds lighter per corner which is miniscule unless your a real trackday hero.
https://f80.bimmerpost.com/forums/sh....php?t=1020511
BTW US M2C can only fit a min of 19" wheels due to the larger brakes.
To the OP, I guess you sold your OEM wheels? I would use those if they are still available.
Edit: Cool touring build, wish they did a factory M3 touring.