The rears were real easy, the pistons pushed back in all the way without opening the bleed screw. It was the fronts that were the pain, the pistons pushed in all the way, but the rubber gaiter on the piston seemed to get in the way of the metal 'shim' that clips around the pistons.
They are in now anyway, and seem to be run in now i've done a couple hundred miles.
I was using Textar pads and Meyle discs at the front, maybe they are just slightly thicker by a hairs width than OEM.

Got to change my handbrake shoes tonight... wish me luck. When I took the rear discs off, one of the shoes was down to the backing plate, so well in need of replacement.

__________________
Ben

'85 500 SEL
'85 928S2
'88 560 SEC
'90 750i