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      02-15-2020, 12:42 PM   #1
facuf80
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F80 M3 weird sound..

hey i recently picked up a 2017 Bmw M3 Dct! hopefully someone can help... i notice it the most in between 1-3 gear at low speeds. when i give it barely any gas i hear a little like metal squeak. and when i let go of the gas it does it as well. if the car is stopped, holding the brake, if i put in reverse it does the noise as well. ive narrowed down and its coming from the rear. any help is appreciated. thank you
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      02-15-2020, 06:01 PM   #2
scourgem3
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Sounds like you might have some rocks stuck between the dust shield and rotors which I think is a common problem.
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      02-17-2020, 06:07 PM   #3
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I think I am experiencing the same or similar "drone" "vibration" "rattle" at super low speeds (0-5mph) that to me feels like it's coming from the brake dust shield on the other side of my brake rotors. I'm no mechanic but my car is in for 50k maintenance so I've asked my performance shop to look into it when it's up in the air.
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      02-19-2020, 02:01 PM   #4
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Quote:
Originally Posted by tomlong View Post
I think I am experiencing the same or similar "drone" "vibration" "rattle" at super low speeds (0-5mph) that to me feels like it's coming from the brake dust shield on the other side of my brake rotors. I'm no mechanic but my car is in for 50k maintenance so I've asked my performance shop to look into it when it's up in the air.
Just gently pull on the brake heat shields and see if any rocks come out
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      02-20-2020, 01:16 AM   #5
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Quote:
Originally Posted by facuf80 View Post
hey i recently picked up a 2017 Bmw M3 Dct! hopefully someone can help... i notice it the most in between 1-3 gear at low speeds. when i give it barely any gas i hear a little like metal squeak. and when i let go of the gas it does it as well. if the car is stopped, holding the brake, if i put in reverse it does the noise as well. ive narrowed down and its coming from the rear. any help is appreciated. thank you
Check your diff bushing. Mine made a squeek sound too and it was blown out.
It was at low speed when on and off power. Or stopping and putting into reverse.
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