[thstone]

Check the wheel bearing by lifting that corner of the car and pulling on the tire/wheel from top to bottom and from side to side. There shouldn't be any play. Then rotate the wheel while lifted and listen/feel for noise/vibrations from the bearing. A bad bearing will usually sound rough or feel like there is some grinding or skipping from smooth to rough.

Check the tires by swapping the rear tires from side to side. Does this change where the noise comes from? If it moves to the other side, then its the tire.

If the bearing and the tires check out ok, then the last place to check are the inner/outer CV joints. They can be hard to diagnose but if its not the bearing or tires, then you're left with the CV's.