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Originally Posted by jugga

I had my 330d x drive m-sport at the dealer today for troubleshooting. I have the noise since I got the car in december. The car is on studded tires, 18 inch rims, and I have driven 5000km since new. My dealer tried a different set of tires, not the solution. I have a new appointment in february, there is a servicebullentin that som version of the prop shaft support bearing can cause noise. My dealer is ordering the updated part. Next appointment they will tear the car down and check the part number on the bearing, and if it is the faulty version replace it.
The bearing sounds like a probable source of the noise to me. I hope it does the trick. I will post the result when done

Prop shaft?