[BaggedAholic]

Originally Posted by dradernh

My guess is that unless someone has already created mounting brackets to position that caliper in the rear, you'd need to have them fabricated. That could be costly, but I don't know how much it might cost.

Then there's the matter of front-to-rear brake bias. The kit you're considering almost surely assumes:

1) You'll keep your OEM rear calipers; or,

2) You'll install a rear kit made by the front kit's manufacturer that is sized so that the original brake bias in maintained.

You can get around that issue by installing a brake bias adjuster.

The bottom line is you can do just about anything as long as neither physics nor cost hold you back.

Thanks! Brembo does make a 4 piston rear kit for the m235i. Stoptech only has a front kit from what I understand.

I'll look into the adjuster and see if I can find out how brembo is mounting it in the rear.