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      10-02-2011, 09:02 PM   #1
Jeef Beef
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Something's broken :(

Driving along today, I suddenly hear a loud scraping sound from the right side of the car. At first I thought I had picked up something from the road and it was stuck somewhere. A quick visual inspection didn't reveal anything.

It sounds like metal on metal - and the scraping only happens when the steering is turned straight forward or to the right. It does not scrape when I turn to the left. The frequency of the sound is also proportional to the speed of the car - so obviously there is some point on one of the wheels that is constantly scraping against something else as it rotates past that point.

In any case, I'm not game enough to drive my car out of the garage now. Advice?
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      10-02-2011, 09:05 PM   #2
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wheel bearing?
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      10-02-2011, 09:13 PM   #3
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Quote:
Originally Posted by ansch View Post
wheel bearing?
That's what I was leaning towards too, but this came out of nowhere without warning. Advan had a look at them a few months ago and they were fine then.
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      10-02-2011, 09:16 PM   #4
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Dust shield contacting with rotor?
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      10-02-2011, 09:17 PM   #5
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Quote:
Originally Posted by Hawkeye 135i View Post
Dust shield contacting with rotor?
Can you please elaborate on this? I can take a quick look and see if this is the case
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      10-02-2011, 09:34 PM   #6
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Quote:
Originally Posted by Hawkeye 135i View Post
Dust shield contacting with rotor?
That's what it sounds like to me, might be a bit bent.

It is what it sounds like a brake dust shield, if they get bent it'll make a racket when you drive
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      10-02-2011, 09:44 PM   #7
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Quote:
Originally Posted by 1q2w3e4r View Post
That's what it sounds like to me, might be a bit bent.

It is what it sounds like a brake dust shield, if they get bent it'll make a racket when you drive
I went and took a quick look - it's a bit hard to see with the car on the ground so I'm not sure.

The sound did just suddenly come out of nowhere - car was driving fine the whole day.

I guess if this is the case then there isn't much to worry about.
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      10-02-2011, 10:02 PM   #8
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You might have picked up a rock in the brake caliper. Try backing up quckly (make sure you are safe to do so, in a parkade somewhere) and apply the brakes hard. That might shake it loose.
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      10-02-2011, 10:40 PM   #9
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Quote:
Originally Posted by Lester View Post
You might have picked up a rock in the brake caliper. Try backing up quckly (make sure you are safe to do so, in a parkade somewhere) and apply the brakes hard. That might shake it loose.
This is possible, i.e a small piece of gravel or rock stuck in brake calliper but removal is not via braking hard but putting your car in reverse and normal driving/braking for a reasonable distance, thereby dislodging the gravel/rock from its forward-lodged position.

Last edited by david.orr; 10-02-2011 at 11:04 PM..
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      10-02-2011, 10:47 PM   #10
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Oh no o.O

Just keep turning left. Opposite of zoolander.
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      10-02-2011, 11:10 PM   #11
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Just keep turning left. Opposite of zoolander.
Made me chuckle!
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      10-02-2011, 11:47 PM   #12
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Quote:
Originally Posted by Jeef Beef View Post
Driving along today, I suddenly hear a loud scraping sound from the right side of the car. At first I thought I had picked up something from the road and it was stuck somewhere. A quick visual inspection didn't reveal anything.

It sounds like metal on metal - and the scraping only happens when the steering is turned straight forward or to the right. It does not scrape when I turn to the left. The frequency of the sound is also proportional to the speed of the car - so obviously there is some point on one of the wheels that is constantly scraping against something else as it rotates past that point.

In any case, I'm not game enough to drive my car out of the garage now. Advice?
I had the exact same thing happen to me. And for me it was a rock in the brake caliper.

A rock scraping sounds like metal on metal. The bit about it stopping when you turn left however makes me doubt it being a rock.

Last edited by dh58; 10-02-2011 at 11:55 PM..
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      10-02-2011, 11:57 PM   #13
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Quote:
Originally Posted by Lester View Post
You might have picked up a rock in the brake caliper. Try backing up quckly (make sure you are safe to do so, in a parkade somewhere) and apply the brakes hard. That might shake it loose.
I'm familiar with this since I have a gravel driveway so it happens all the time. The first thing I tried was reversing to loosen any rocks. No dice. Also, a rock in the caliper makes a constant scraping sound rather than the short scrape I get everytime the wheel rotates.

Quote:
Originally Posted by dh58 View Post
I had the exact same thing happen to me. And for me it was a rock in the brake caliper.

A rock scraping sounds like metal on metal. The bit about it stopping when you turn left however makes me doubt it being a rock.
Exactly. It doesn't make a noise when I'm turning left, which makes me think some component is rubbing against the wheel when it's straight ahead or right.
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      10-03-2011, 12:20 AM   #14
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Take your wheel off and have a look.
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      10-03-2011, 12:25 AM   #15
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Quote:
Originally Posted by Jeef Beef View Post
I'm familiar with this since I have a gravel driveway so it happens all the time. The first thing I tried was reversing to loosen any rocks. No dice. Also, a rock in the caliper makes a constant scraping sound rather than the short scrape I get everytime the wheel rotates.



Exactly. It doesn't make a noise when I'm turning left, which makes me think some component is rubbing against the wheel when it's straight ahead or right.
For me, It wasn't a constant scraping sound. As the rock isn't a perfect circle it depends on the shape etc. I wish I could help you more!
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      10-03-2011, 12:31 AM   #16
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+1 for dust shield, or something caught between it and the rotor.

Sydney roads suck balls. best of luck.
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      10-03-2011, 12:37 AM   #17
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Quote:
Originally Posted by gazz View Post
Take your wheel off and have a look.
That is my next course of action. Thanks for the input guys!
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      10-03-2011, 04:20 AM   #18
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Yep, definitely have a look see.
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      10-04-2011, 12:45 AM   #19
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Took off the wheel and it turned out to be a small piece of concrete between the metal shield and the rotor. Was certainly a bitch to get out but hey, nothing major!

Again thanks for the input.
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      10-04-2011, 12:50 AM   #20
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Glad it's all sorted mate
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