I've had a humming noise coming from the car when I accelerate for about a week now. I recently bought a wheel bearing thinking that it may have went out. I have brought both of the front tires off the ground to do a "wiggle test" with no play in either. I'm stumped. Any other way I can tell if it's the wheel bearing without removing anything off the car? It doesn't make this noise until I get it to about 20-30 MPH and it doesn't seem to change when the weight of the car shifts. It's a low hum, almost like your running over the little threads on the shoulder of a highway but, low. Sounds to be coming from the front end but, honestly it's hard to pinpoint.