So my wheels are 17"x8", ET 38. I have 2 mm of clearance between the inner edge of the barrel of the wheel and the strut tube with NO spacer between the rotor and wheel. The wheel doesn't even come close to hitting the caliper, there is plenty of clearance!
I am currently running a 5 mm spacer though to make the wheel a bit more flush with the fender, although it could still go out more. In the rear I am running a 15 mm spacer. So answer the question about minimum wheel size, 17" I believe will be the minimum. My current front bracket allows the smaller E36/E46 325i/328i caliper on the smaller rotor, so a 16" wheel fitment kit can also be achieved.
This set up moves the rotor face out by 13 mm from where the original rotor face on the 4 lug front set is stock. This is 0.5 mm more than how far out running E36 M3 brakes on an E30 M3 would move the rotor face due to the rotor spacer.
After thinking through this set up and seeing that some people would prefer just the fronts as opposed to front and rear, I believe that I will offer a baseline kit for the fronts, and brackets and parking brake adaptors for the rear can be added as wanted.
I am also working on the bracket to run the Z3 rear rotor with the stock rear caliper and parking brake, just incase some don't to go E46 M3 all the way!
I am currently running a 5 mm spacer though to make the wheel a bit more flush with the fender, although it could still go out more. In the rear I am running a 15 mm spacer. So answer the question about minimum wheel size, 17" I believe will be the minimum. My current front bracket allows the smaller E36/E46 325i/328i caliper on the smaller rotor, so a 16" wheel fitment kit can also be achieved.
This set up moves the rotor face out by 13 mm from where the original rotor face on the 4 lug front set is stock. This is 0.5 mm more than how far out running E36 M3 brakes on an E30 M3 would move the rotor face due to the rotor spacer.
After thinking through this set up and seeing that some people would prefer just the fronts as opposed to front and rear, I believe that I will offer a baseline kit for the fronts, and brackets and parking brake adaptors for the rear can be added as wanted.
I am also working on the bracket to run the Z3 rear rotor with the stock rear caliper and parking brake, just incase some don't to go E46 M3 all the way!
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