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      05-23-2023, 03:05 PM   #1
xwilkinx
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What is this sound? (Rear axle area)

Anyone know what this sound could be? Noticed it as I was leaving my house. Matches car speed, gets pretty loud. The sound immediately stops when I switch to N while moving.

I turned around and parked the car after this, it's much louder in person.

Videos:
https://www.youtube.com/shorts/wV5ceRpREz4
https://www.youtube.com/shorts/nBUUAQFpYUM

Car is a 2015 F80 M3 DCT.

Update: Sounds coming from the rear differential (catastrophic failure).
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Last edited by xwilkinx; 06-11-2023 at 10:57 PM.. Reason: Updated video links
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      06-06-2023, 11:32 PM   #2
xwilkinx
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Update: Turns out this noise was coming from the rear diff. I decided to replace it with a used one with lower miles (currently in the shop for the repairs).
__________________
2015 F80 M3 - Black Sapphire
2012 E92 M3 - Frozen Silver
Previous:
2013 F10 M5 / 2011 E92 M3 / 2009 E92 328i
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