Rear Brake Problems - BMW Forum -

3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

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post #1 of 2 (permalink) Old 04-18-2005, 05:57 PM Thread Starter
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nstg8 1 is an unknown quantity at this point
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I have a 91 325iC 147K miles.the rear disc brakes start to make a dragging noise at @ 20 mph. this is w/o having applied the brakes. when this happens I just touch the pedal and it goes away, but does come back. ghead I have replaced 1 rear caliper that was bad, the other looked ok inside. I have replaced brake lines and took apart the brake regulator valve and cleaned it and of course new fluid and flushed the system very well. I still have this noise and ALOT of rear brake dust on both wheels , 2 to3 times more dust than I am getting on the front brakes. The excessive dust has been a problem for a couple of years, also just installed new rear factory pads, and they are getting ate up also.
Any help would be appreciated. I'm think a master cylinder is bad but don't know how to check it
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post #2 of 2 (permalink) Old 04-21-2005, 06:14 AM
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bad man working is an unknown quantity at this point
If you got ABS get that checked. The only thing I've seen like that was on a Peugeot and the rear flexi brake hoses had collapsed internally and were holding pressure in the callipers and it got worse with weight in the car.
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