Metal Grinding ??? - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 07-07-2004, 04:57 AM
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I've noticed at speeds of 5-10 mph, I hear a sound best described as metal to metal grinding noise coming from the rear. used My car is lowered but has been running fine for quite some time now until now. I'm guessing it's my disc brakes or something related to that effect. Any suggestions before I go and take it to my mechanic?

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#2 (permalink) Old 07-07-2004, 05:55 AM
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Could be suspension bushes........

...or a stuck handbrake....

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#3 (permalink) Old 07-07-2004, 11:50 AM
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Your caliper could be seized, or possibly a wheel bearing is worn out. It's difficult to say without actually hearing the noise.

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#4 (permalink) Old 07-07-2004, 03:27 PM
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Handbrake shoe things are messed up.
Put the car in neutral on an incline with the front of the car facing up the hill. Roll backwards a foot or two (just enough to get the slightest bit of momentum) and pull the handbrake. Now drive off as usual. This fixes it on my car. You dont even need an incline, just open your door and push your car backwards with your left foot and hit the handbrake.

Whenever I use my handbrake while moving forward, my rear handbrake shoes or whatever is involved in that mechanism back there will make this nasty metal grinding noise at any speed. (can't *hear* it at higher speeds because of engine\tire\road noise, but you can hear it if you drive past a parked car or some really close big object that reflects sound well)


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#5 (permalink) Old 07-07-2004, 05:10 PM
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Quote:
Originally posted by bitcore@Jul 7 2004, 03:07 PM
Handbrake shoe things are messed up.
Put the car in neutral on an incline with the front of the car facing up the hill. Roll backwards a foot or two (just enough to get the slightest bit of momentum) and pull the handbrake. Now drive off as usual. This fixes it on my car. You dont even need an incline, just open your door and push your car backwards with your left foot and hit the handbrake.

Whenever I use my handbrake while moving forward, my rear handbrake shoes or whatever is involved in that mechanism back there will make this nasty metal grinding noise at any speed. (can't *hear* it at higher speeds because of engine\tire\road noise, but you can hear it if you drive past a parked car or some really close big object that reflects sound well)
will try it now. thanks guys! I'll post my outcome.

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#6 (permalink) Old 07-07-2004, 05:49 PM
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This happened to me in my old car when I wore my pads down to nothing and was literally cutting grooves in my rotors....I know...that sucks...but it was a VW so who cares B)

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#7 (permalink) Old 07-07-2004, 08:16 PM
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Quote:
Originally posted by RIBEMR26@Jul 7 2004, 06:29 PM
This happened to me in my old car when I wore my pads down to nothing and was literally cutting grooves in my rotors....I know...that sucks...but it was a VW so who cares B)
Oh yah, That will definately do it too...


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#8 (permalink) Old 07-08-2004, 03:49 AM
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^^^ :lol: I bet it looked pretty at night when the sparks were flying!!!

<span style='color:blue'>&quot;So my BM makes me a flash bastard? Then I guess you're just keeping it real from the seat of your nova?&quot;</span>

<span style='color:gray'>&quot;...and the home of the brave..... is bravey 130bhp from a 7 litre engine? 100bhp/litre or don't bother building it!&quot;</span>

<span style='color:red'>&quot;Aaahh the UK; where every road is jammed, under construction, poorly maintained and unfairly policed, at least we don't get over-taxed for it........ HA HA HA!&quot;</span>
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#9 (permalink) Old 07-08-2004, 05:43 AM
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Quote:
Originally posted by RIBEMR26@Jul 7 2004, 05:29 PM
This happened to me in my old car when I wore my pads down to nothing and was literally cutting grooves in my rotors....I know...that sucks...but it was a VW so who cares B)
man i think your right! it seems i have worn my pads down. gonna take it to my mech tomorrow.

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#10 (permalink) Old 07-08-2004, 08:49 AM
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Just a little insight to save you a little money....brake pads are the easiest thing to change on a BMW. I did mine last night and it took me an hour for all four and cost me about $40 in parts. Just my .02. I used www.pelicanparts.com for the DIY.
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#11 (permalink) Old 07-08-2004, 07:47 PM
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could you post a step by step DIY process. Thanks!

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#12 (permalink) Old 07-08-2004, 11:34 PM
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I have the same sound coming from my car only when in reverse... I don't notice it when going forward.. but when I had my brakes changed 2 months back, they said my read pads had over 90 left... but back then I had an auto and now I have a manual...weird I must be from Holland

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#13 (permalink) Old 07-09-2004, 03:22 PM
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I had the same problem with my car but happened only when I turned right very slightly at between 10 and 45 mph. - It drove me crazy trying to figure out what it was. Apparently my parking brake pads in the rear were completely worn out. I didn't even realize before that the parking brake pads are different than the standard brake pads (they are located behind your disc and unlike your brake pads you can't see them unless you take the disc off.)

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#14 (permalink) Old 07-14-2004, 10:32 PM
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My 95 M3 made a similar sound when cornering at low speed, the fix was to add GM differential additive. No joke, found the fix in Tech Talk Roundel Mag. worked for me.
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