New brakes, rubbing sound from rear

GreaseMonkey · 04-14-2014, 01:23 PM

Hey everyone,

Just took time this weekend to install new rotors and pads. Everything is working great and feels much better, however I have a slight rubbing sound that seems to be coming from the rear brakes. This is only when I am NOT on the brakes. The sound is rather faint, but does correlate to speed. Anyone have an idea what might be going on?

I did have to reduce the tension on the rear e-brake, perhaps something is rubbing inside the hub?

mankytron · 04-18-2014, 08:18 AM

dust shield

The HACK · 04-18-2014, 10:53 AM

Did you adjust your parking brake shoes?

avocet · 04-18-2014, 02:33 PM

either the dust shield as already mentioned, or your pads and discs need to get bedded.

new discs and pads have a rough surface that can slightly interfere when new. go do a few high(er) speed braking events and see what happens.

mweisdorfer · 04-19-2014, 09:32 AM

take off the rotor, look at the ebrake and spin it the axel around by hand to make sure nothing is rubbing. You should wire brush the hub of all rust and debris so that the metal is clean. Same with the caliper, guide bolts, and rotor guide. Grease the guide bolts and pads with high temp, ceramic break grease. The stuff I use goes to 3000 degrees. Not that the brakes will ever get that hot on daily driving. Just piece of mind.

04-14-2014, 01:23 PM	#1
GreaseMonkey Second Lieutenant 54 Rep 258 Posts Drives: '09 335i xDrive Join Date: Feb 2013 Location: CT iTrader: (4)	New brakes, rubbing sound from rear Hey everyone, Just took time this weekend to install new rotors and pads. Everything is working great and feels much better, however I have a slight rubbing sound that seems to be coming from the rear brakes. This is only when I am NOT on the brakes. The sound is rather faint, but does correlate to speed. Anyone have an idea what might be going on? I did have to reduce the tension on the rear e-brake, perhaps something is rubbing inside the hub? __________________ His: '21 Kia Telluride SX Hers::'19 Lexus Ux250h F-sport His: '67 Jacobsen Tractor Formerly His:'09 335 xdrive
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04-18-2014, 08:18 AM	#2
mankytron Private First Class 20 Rep 120 Posts Drives: 335 coupe Join Date: Mar 2014 Location: ontario canada iTrader: (0)	dust shield
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04-18-2014, 10:53 AM	#3
The HACK Midlife Crises Racing Silent but Deadly Class 1821 Rep 5,337 Posts Drives: 2006 MZ4C, 2021 Tesla Model 3 Join Date: Oct 2007 Location: Welcome to Jamaica have a nice day iTrader: (1)	Did you adjust your parking brake shoes? __________________ Sitting on a beat-up office chair in front of a 5 year old computer in a basement floor, sipping on stale coffee watching a bunch of meaningless numbers scrolling aimlessly on a dimly lit 19” monitor.
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04-18-2014, 02:33 PM	#4
avocet Major 252 Rep 1,157 Posts Drives: 2007 328i 2011 X5d Join Date: Sep 2010 Location: Vancouver bc iTrader: (0)	either the dust shield as already mentioned, or your pads and discs need to get bedded. new discs and pads have a rough surface that can slightly interfere when new. go do a few high(er) speed braking events and see what happens.
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04-19-2014, 09:32 AM	#5
mweisdorfer Major General 1903 Rep 6,968 Posts Drives: 2007 Black/Black 335i e90 Join Date: Apr 2011 Location: Holly, MI iTrader: (0) Garage List 2007 BMW E90 335i [0.00] 2008 bmw x5 [0.00]	take off the rotor, look at the ebrake and spin it the axel around by hand to make sure nothing is rubbing. You should wire brush the hub of all rust and debris so that the metal is clean. Same with the caliper, guide bolts, and rotor guide. Grease the guide bolts and pads with high temp, ceramic break grease. The stuff I use goes to 3000 degrees. Not that the brakes will ever get that hot on daily driving. Just piece of mind.
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