Yah, typically wheel bearings make the wheel wobble. Also, when you unload it, it should make less noise.
Double check your lug nuts. The other thing (this happened on my wifes car when we first bought it) the rear brake pads weren't installed correctly and eventually worked their way so they rubbed the rotor only when she turned or if the car was jacked up and we tried to spin the tire(s). I say pull the wheels and check your brakes.