RCB

I actually own a shop. I do a lot Japanese turbo cars (ISF, Supra,GTR mainly) and I also specialize in N54 BMWs. I just finished a E60 build with FBO and Pure stage 2 turbos now I have a E92 in process that is getting FBO+ and a tune.
I don't advertise myself as a vendor because my business model is purely referral work and community relationship based. It's more a private way of doing things and I am much closer with my customers this way.
Either way I really appreciate the offer to help me out. If you ever need anything it goes both ways. You should swing by sometime, I'm in Burlington. PM me if you want to chat more.

Regarding the brakes I did the one strop from M5 upgrade. The E60 535i RWD has the bigger rotors and a different caliper bracket to move the caliper outward for the larger diameter. I swapped the fronts out for the larger E60 calipers and rotors. For the rear I kept the stock rotor diameter for now. In order to do the larger rotor/caliper combo in the rear you also have to change the spindle and wheel bearing because the rotor hat on the E60 has 20mm less offset. I didn't want to get into that this year. Instead I just got new Zimmermann rotors for the rear.
So in total I am doing E60 front brakes, new Zimmermann rotors all around, Cool Carbon pads all around, UUC s.s. Brake lines and Motul RBF600 brake fluid.

It's not the M5 upgrade but it should be a good improvement from were I was.

Chris

MiniNL

Interesting, I was debating this same brake upgrade. My front rotors look pretty good on wear, but one is warped, maybe both. Was debating whether to have it turned, buy new rotors or do a complete brake upgrade. M5 upgrade is out, because it probably won't fit my 18s (style 124) and I'm not upgrading wheels for now. So the E60 RWD front caliper is a good upgrade or would a decent set of rotors and pads get me close as well?

(Sorry for the hijack)

RCB

When rotors are wrapped I feel like cutting them and making them thinner is a short term fix. They are just more susceptible to warping again.
The E60 535i upgrade is just new rotors and calipers. The pads are the same part number since the bracket is all that changes to move the caliper further out. I purchased some Cetric Reman calipers and they weren't that expensive.
The way a viewed it was that I had to buy pads and rotors anyway so the only added cost was calipers and I had an upgrade.

I'll start a new thread with pics and info tomorrow because we really have hijacked this thread!

BostonJon

@RCB...

PM Sent