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Old 10-19-2017, 03:59 PM   #1
equ
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Rear? noise in e46 m3

I took it in for an oil change and while it's at the shop, complained about an occasional noise. It happens more often when cold, first started. If you make a slow turn near full steering lock, it seems to emanate from the inside turn rear. Like a rumble or a grind.. Not that loud or noticeable and goes away quickly. Candidates:
- diff low on fluid?
- something wrong on rear axles or bearings
- handbrake was tightened last year, maybe it's affecting? I notice when I pull it on a steep hill, the car seems to get diagonally loaded.
- something stupid like a stuck branch/gravel behind the brake dust cover...

We will see. I didn't have time to pull all wheels off and re-torque them to proper spec before taking it to the shop. Wish I'd done that.
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Old 10-19-2017, 04:09 PM   #2
Nick M3
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Diff fluid. BMW has a special fluid for this.
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Old 10-19-2017, 04:20 PM   #3
bren
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Yep.
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Old 10-19-2017, 04:39 PM   #4
equ
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Quote:
Originally Posted by bren View Post
Yep.
Maybe yeah, the stinky stuff. I did that four years/12k miles ago.

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