Quote:
Originally Posted by 414bhp
For street and HPDE use in the 18"x10"et25 square fitment, what are the advantages and disadvantages of the EC-7, ARC-8, and ARC-8 concave? This would be on a stock suspension competition package e90 M3, with stock brakes to start with and maybe a 355mm Stoptech ST40 front BBK in the future.
Thanks!
|
In the 18x10" ET25 fitment, the ARC-8's are the concave versions due to the width and offset of the wheel, and the EC-7's are Profile 3 which are the most concave version as well. The 18x10" ET25 wheels combined with a 275/35/18 tire is the most popular choice for the e9x M3 with OEM ZCP suspension. The EC-7's are a more modern style of wheel, designed with endurance racing in mind, and provides better brake clearance for those that are looking to upgrade to the 6-piston 380mm Brembo BBK on their M3's. Otherwise, the ARC-8's are compatible with all smaller BBKs and are slightly lighter over all, hence why they are a top contender for HPDE use for many enthusiasts.