I have an 85 535i. The last couple weeks I have notice my car has been
shimmying bad after driving it for 5 mins or so. It got real bad at
about 45mph. I then realized it was because my passenger caliper was
seizing. I was driving today and noticed the burning smell of the
friction and was trying to get it home. When I would apply the brakes,
the passenger brake was not engaging. I was at a light and noticed it
was smoking and I pulled it off the road to cool it off. When I
started the car, I backed up and the brakes were almost totally gone.
I pulled back in the spot and saw fluid on the ground. It was ATF from
booster resevoir. When I depressed the brake the fluid was flowing out
of the top of the resevoir. The clutch works perfectly. It is a 5-speed
manual. But when I depress the brakes, it goes to the floor and the
atf spurts out the top of the resevoir. I opened the master cylinder
resevoir and noticed it was full and some fluid had been force out of
it. I am assuming I overheated my brake system and seized it. Has
anyone seen this problem before?