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    Squeak from rear end is driving me crazy...

    Greetings,
    I'm trying to narrow down the source of this squeaking before I take it to the shop, so, I thought I'd do some fishing.
    If I drive with the left side windows down, there is definitely a squeaking from the rear end.
    The ONLY way this squeaking changes tone or frequency is when the car changes speed.
    It does NOT change when increasing/decreasing engine speed, or braking, or taking the clutch out/in.
    It does NOT show up, or change when hitting speed bumps or heaves in the road, like bushings or the like.
    Some of my gearhead friends think it's a bad bearing. My mechanic hasn't heard it, yet, but he says bad bearings don't squeak, they drone then start to "roar", the worse they get.
    What do you folks think? Is there some sort of heatshield back there?
    Any advice would be welcome.
    Thanks!

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    There IS a heatshield over the (right?) axle

    IIRC, but I don't remember if it can get in the way of the axles for rubbing. I would be more inclined to think two things:

    1. E-brake mechanism is dragging off-center and rubbing one (high) spot on the drum.
    2. A dust-shield on the rear (or front brakes is rubbing the rotor.

    Check number one by slowly applying the parking brake whilst in motion to see if tone is altered when the brake shoes spread out. Take care to release the brake before more than a few seconds.

    Number two is a little harder to confirm by virtue of it's location behind the wheels, but if you have access to a jack, then you can raise the vehicle and spin the wheels one at a time to locate the offender, and if that seems to be the trouble you can pry the shield away from the rotor by small amounts with a long-ish tool.

    Good luck!
    '87 <b>528e</b> "is" 214.5k
    '88 <b>M5</b> 193k (Head removed, ready for reassembly)
    Dinan gen.1
    OEM Front & Rear Fuzz-buster

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    Re: There IS a heatshield over the (right?) axle

    Thanks, eh?

  4. #4
    M5 Jeff
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    Heat sheilds chater/ vibrate

    I say stick your head under there and have a freind put his knee on the bumper and push the rear up and down, if it is a bushing or spring seat you will know it in about 2 seconds. Also a real simple answer would be yor break pad wear indicator ( small metal tab on the pad itself that scrapes the rotor when your pads are are too thin and need to be replaced.

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