Quote:
Originally Posted by Megator
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. |
Yes, but moving to an aftermarket wheel, like the ARC8 17 x 9 ET:30, drops real rotating mass. Stock BMW rims are around 25 lbs each, while ARC8's in the same size are 16.5 lbs. Remember a traditional tire is typically a pound or so lighter weight compared with its equivalently-sized RFT, and the total rotating mass drops somewhere between 35 - 40 lbs.
And the cost of 17" rubber is in a different universe compared with upsized 20" tires.
While this has a remarkable and noticeable gain in the suspension's ability to maintain contact between the tire and asphalt, I agree that nonetheless it's mostly relevant to regulars at the track.
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2011 6MT RWD ClubSport Wagon | 3,185lbs | 1 of 149 ZSPs delivered in North America
Outside: BMW M-Aero, Euro region lighting, Seibon | Inside: M3 cockpit, Recaro SPG, Prototipo, AutoSolutions SSK, UCP | Stop: M3 ST-40R, PFC | Grip: Solid-mounted subframes, rear coilover conversion, M3 Nitron R3, Hyperco, SPL, AKG, ARC8 | Go: StageFP, CF snorkel, 3IM, MILVs, SuperSprint headers, Dundon Motorsports Inconel exhaust, VoltPhreaks | Cool: CSF | PCA #2018100384 | BMW CCA #505794