what is this humming sound coming from my right rear of A4

[EastCoastVw97Vr6]

i just got this a4 and it has this humming sound that is not loud i can deal with it but would like it to stop it is coming from the right rear of the car does anyone have any idea what this may be i dont think it is bad the car runs fine but id just like it to stop

[db]

Possibly wheel bearings.

[BSaudiA4]

most likely, had the sam prob with my car, bought wheel bearing from ecstuning, took out the whole hub assembly off and took it to a shop and got them to press out the old one and put in the new, good as new

[sLaab]

I also had bad wheel bearings in the rear of my Audi. Not uncommon when you get into the high mileage.

Jon