Bennyboy 199 Report post Posted May 2, 2017 (edited) So, upgraded all four corners on my e28 eta to e34 540i calipers and rotors. notable improvement. As far as I can tell, the next upgrade is in the master cylinder dept to improve pedal feel. have sourced an e32 750i MC to swap out, but, sounds like compatibility is not as I had found. ETA models employ a vacuum boost brake system, and now I'm not sure this swap out is feasible. Anyone done this upgrade? Or able to provide some insight? Edited May 2, 2017 by Bennyboy Quote Share this post Link to post Share on other sites
