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      11-28-2021, 09:35 AM   #3
spidy512
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Drives: 2015 f80 M3
Join Date: Oct 2016
Location: East Bay Area, CA

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2015 BMW M3  [0.00]
Quote:
Originally Posted by horsepower_and_hounds View Post
Your crank hub is about to fail...... better get one installed like most of the rest
HAHA.

We could use some more info.

Clearly the car is a DCT?
Any mods to the car?
Where approx does the sound come from? Right next to you? At the back of the car? In the front of the car? Can you conntact the seller for more info?

FWIW, these cars make some crazy noises stock. Lots of driveline noise and the DCT can be clunky when driven softly (low speeds, reverse to forward). I find my DCT get confused ebry now and again when making a Cali stop, or getting the green light right as I am about to stop.

To me, from the little info and the vid, it sounds like the tranny engaging or the diff engaging. I have a Turner plate and poly bushings in my F80 and I can here the gears engage all the time as I come off anf on the power. Especially when driving easy around town. Mine is exageratted because of the plate, but keep in mind that noise is still there in other cars, its just being muted by the stock tofu soft bushings.

Anyway, I do hope it is just driveline noise and not something else.

good luck,
josh
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