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Interesting C36 wheel noise
All,
On the way home from San Diego last night, I had a strange noise start in the front right wheel. The noise is rythmic and varies with the speed of the car, not the rpm of the engine. It sounds like something is hitting on each revolution of the wheel. I pulled over and checked for something wrapped around the wheel, but nothing was there. The noise comes and goes, it is worse at low speed than high speed and disappears when braking. My ideas are: 1) The pads on the car are in need of replacement, perhaps a pad is loss and hitting a high spot on the rotor? 2) The front wheel bearing is shot. Thanks for the help! ~dnm
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1995 C36 AMG |
#2
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sound
tough to guess on sounds written in emails but we've all been there.
Sounds rotational in nature if it's variable based on speed. You guessed the obvious ones: Wheel bearings Brake components I would think one of the two. Does the car pull to one side? And after driving does that hub or rim feel hotter than the other side. That would indicate bearing or brake components. Let us know what you find, and any other diagnostic tid bits you come accross.. Joel |
#3
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Re: sound
The car is not pulling, but it does have bit of a vibration. I jacked the car up yesterday and rotate the wheel: no noise. It was not apparent in the drive to work today either. Well the 101 is so crappy it could have been there and I would not have know the difference. =]
I will try the temperature test on the drive home. Perhaps tread seperation in the tire? I am going to order a set of Porterfields from to replace the front pads. Maybe I will run into something during the tear down. ~dnm
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1995 C36 AMG |
#4
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tires
tires can definately cause the symptoms you describe. however, as I am sure you figured the sounds would almost always be there.
PS> No chance something is rubbing somwhere is there? Joel |
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Re: tires
Quote:
~dnm
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1995 C36 AMG |
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The drive home tonight was pretty much the same. The noise disappears when braking or on wide turns to the left. It appears to be worse when turning right (60 + mph).
~dnm
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1995 C36 AMG |
#7
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Turning
The sound changing when turning definately sounds like a bearing thing.
Just went through this with one of my Sentra's. Sounds like a fast pitched rumble and when I turned and unloaded that wheel the sound would go away but get worse when I turned the other way and loaded the wheel. If not tread wear probably bearing. But then there are some other possiblities, ball joint, etc. Jack the car up and with the wheel off the ground grasp the wheel and give a little shake. If the bearing is junk you'll feel a little play, compare to the other side. You should feel the difference. Joel |
#8
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Fixed!
I went to Mr. MB Motors in Tarzana (Thanks Alon!) this morning on the way to work. It turned out that it was the wheel bearings, they simply needed to be adjusted. It took about 45 minutes, including test drives, and that was it.
Problem solved! ~dnm
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1995 C36 AMG |
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