Quart:
I'm glad I found this thread and hope to learn from your experience. I have a 2010 E91 X-drive that I would like to upgrade the brakes, and, as you are, I want to keep it as close to OEM parts as possible and keep the parking brake. I had the chance to do a BMW track day at Pocono last month and drove a couple of laps in an M550 and, Wow!, do those brakes make a difference in what you can do!
Had been looking to do it immediately but just had to drop a lot of coin on a transmission for my '99 Corvette, so brakes for the BMW will probably be a "next Summer" project.
So, are you going with the 135 calipers/rotors up front or the 335s? You mention minor modifications - what are they and how minor?
And, do post up when there are any developments or progress on the project.
K9Leader
