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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 10-14-2008, 10:23 AM   #1
nassersyed
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Join Date: Sep 2007
Location: Sugar Land, TX
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Noise when braking, and it's not the pads

Hey guys,

I had a quick question- Whenever I'm braking and I happen to drive over a bump in the road or anything, I hear a "RRRRRRR" noise. It's not a squeak or anything. It happens only when I'm coming to a stop and if there's some kind of obstruction in the road, when I drive over it while braking my car makes a kind of sounds that can only be described as "RRRRRRRRR" and the braking pedal seems to go in a bit deeper.

Is this normal? It doesn't seem like it would be. Has anyone else experienced this? I have a 2002 M3, around 45K miles. I don't think it's the brake pad, and am kind of stumped.

Thanks in advance.
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Old 10-14-2008, 08:11 PM   #2
realcompm3
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My Ride: 11 E92 M3 ZCP
mine had done that. just check the brake fluid
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Old 10-16-2008, 12:19 PM   #3
nassersyed
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Brake fluid is full. Doesn't seem that that's it.
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Old 10-16-2008, 04:20 PM   #4
driver dude
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Quote:
Originally Posted by nassersyed View Post
Hey guys,

I had a quick question- Whenever I'm braking and I happen to drive over a bump in the road or anything, I hear a "RRRRRRR" noise. It's not a squeak or anything. It happens only when I'm coming to a stop and if there's some kind of obstruction in the road, when I drive over it while braking my car makes a kind of sounds that can only be described as "RRRRRRRRR" and the braking pedal seems to go in a bit deeper.

Is this normal? It doesn't seem like it would be. Has anyone else experienced this? I have a 2002 M3, around 45K miles. I don't think it's the brake pad, and am kind of stumped.

Thanks in advance.
It's not impossible for it to be the pads, so unless you have visually inspected the pads in the calipers, don't rule them out.
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Old 10-16-2008, 05:43 PM   #5
dcf
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My Ride: 02 e46 M3 SMG - LSB
Sure it is not just the antilock kicking in on the one wheel that hits the bump, etc.? That would explain the noise and the pedal drop. Different from when you slam on the hooks and 2 or 4 wheels go into antilock, which will cause a bigger pedal drop and more noise.
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