M3 rear brakes on a 335i

[E92 420]

Ok so I have a forge motor sport front BBK and couldn’t be more happy with it however they do not make a rear kit for the general e9x models they only make a rear kit for the M3!

Anyone fitted m3 rears before? If So what’s needed to get the m3 rear brakes to fit on my 35i?

 

[doublespaces]

@aus335iguy knows about this I think

 

[aus335iguy]

Sorry guys I’ve bought m3 rear hubs but that was for my f30 brakes not M3 ones. I know that the m3 rear hub is a different offset and so spacers and a bigger rotor would likely be needed. I’m sure someone has done it before ...

 

[dyezak]

I've heard it works but I've not tried it.

 

[E92 420]

Shame nobody’s got anything conrete on this. I can’t see it being a major PITA tho so guess I’ll just have to buy the rear forge bbk kit and go from there! Hopefully not too much needs swapping.

 

[JMARS]

Shame nobody’s got anything conrete on this. I can’t see it being a major PITA tho so guess I’ll just have to buy the rear forge bbk kit and go from there! Hopefully not too much needs swapping.

Keep us posted, I'm interested in doing the same thing.

 

[aus335iguy]

Because the m3 hub places the callipers further out radially and also further outboard I would say making it plug and play won’t work the rotor will need to be roughly 15mm smaller and offset by about 8mm.
The easiest thing to do to make it plug and play buy a set of m3 rear carriers.

* I’m not an expert I’m basing this on observations on how f30 brakes fit on both rear carriers. Feel free to critically examine the logic