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Suspension & Braking Forum by BimmerWorld
Have some questions about suspension or brake setups for your E46 BMW? Get all your answers here!
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Old 01-01-2016, 05:56 PM   #1
taburete68
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Join Date: Jan 2016
Location: utah
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My Ride: 325XI
Drivers Side Front Brakes

My 2002 325xi Sedan has a problem with the Front Drivers Side Brakes that has my local repair guy stumped. Only on the front left, the brakes are on a little bit causing the rotor to heat up a lot and making a burning brake smell after a drive of a couple miles. When I stopped I can kick up snow on that wheel and it burns and sizzles, but the other wheels are merely warm. Oddly it doesn't pull to the side, but I can feel that it doesn't coast as long as it used to. The repair guy suggested changing out the caliper, but with little idea if that would fix it. Has anyone seen this before? Thanks.
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Old 01-01-2016, 06:47 PM   #2
John in VA
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It could be a sticking/non-sliding caliper, or a bad rubber brake hose. The rubber hoses deteriorate from the inside and may be clogged & not allowing proper movement of brake fluid, keeping pressure in that caliper. It's a cheap thing to check/replace.
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Old 01-01-2016, 07:18 PM   #3
rawbspear
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sounds like a stuck piston; its not retracting. Could have air in the lines as well. Install a new caliper, should be about 40$ from O'Reillys auto parts, and bleed the brakes.

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Old 01-01-2016, 08:54 PM   #4
BMW-North
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I had to change a caliper recently on my kids 325Xi - even after buying a caliper rebuild kit and lubing the pins it still kept sticking. Everytime she drove home I could throw snow on it and make steam (just the front pass rotor) - change the caliper with a reman one for slightly more than the kit - that's what I will do next time.
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Old 01-01-2016, 11:45 PM   #5
asianisafish
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Caliper piston could be stuck and dragging very lightly as you drive.
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Old 01-02-2016, 06:41 AM   #6
markusmarkus
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BMW recommends that the slide pins not be lubed at all.
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