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420d humming noise during acceleration
This is my first post here so I’d like to say hello!
I have an irritating issue with my F36 420d. Car is from 2015, with B47, RWD. During acceleration at 2000rpm I can hear a humming noise which is similar to broken wheel bearing. There is no way to reproduce this sound while car is parked. It occurs both in Comfort & Sport mode, only around 2k rpm. Noise is not dependent on speed, gear or turn direction. Front left, front right and rear right wheel bearings have been replaced due to another issues. Last summer I have changed gearbox & diff fluids. Driveshaft support bearing (apologies, I do not know the exact english name of this part) has been changed last week but without signs of improvement, noise is still there. Situation looks exactly the same with winter tyres and summer ones so it does not depend on “rubber” Car runs very well besides this one irritating sound.
Do you have an idea what might be the reason of such noise?
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