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      01-18-2020, 09:34 AM   #1
UnfoundLegend
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Hope everyone is doing well,

Recently there's been this strange "tinny" noise under acceleration both in gear and in reverse. Noise appears to be coming around the rear wheels toward the rear of the car.

Would anybody know what it could be related to?

Video 1:


Video 2:
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      01-18-2020, 12:32 PM   #2
M5Rick
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Quote:
Originally Posted by UnfoundLegend View Post
Hope everyone is doing well,

Recently there's been this strange "tinny" noise under acceleration both in gear and in reverse. Noise appears to be coming around the rear wheels toward the rear of the car.

Would anybody know what it could be related to?

Video 1:


Video 2:
Get the diff holder checked it may be cracking and the sooner the better.
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      01-18-2020, 02:07 PM   #3
UnfoundLegend
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Quote:
Originally Posted by M5theonlyone View Post
Quote:
Originally Posted by UnfoundLegend View Post
Hope everyone is doing well,

Recently there's been this strange "tinny" noise under acceleration both in gear and in reverse. Noise appears to be coming around the rear wheels toward the rear of the car.

Would anybody know what it could be related to?

Video 1:


Video 2:
Get the diff holder checked it may be cracking and the sooner the better.
I just replaced the driveshaft U joint because there was a bit of play. The sound doesn't seem like it's coming from the differential.
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      01-18-2020, 06:50 PM   #4
technician117
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Something is torquing under load. Check the bolts securing the aluminum brace under the diff and the long exhaust crossmember about mid-car. I had a similar noise start a month after having the exhaust off. I retorqued the bolts mentioned and the noise went away.
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      01-18-2020, 09:02 PM   #5
SapphireM5
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Check around the rear rotor and caliper. There is a dust shield behind the rotor check for anything in there. GL
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      01-19-2020, 03:35 PM   #6
Solo_M_Tech
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there is a rock between the rotor and the heat shield. common issue.
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