[Yetti]

if you suspect a bad hub or bearing do a couple of quick tests while driving. you will need a road with a long curve like an exit ramp. if you hear a howl or hum from the suspect bearing put it into the a curve to transfer weight away from the bearing. if the noise quits its most likely the bearing on the inside of the turn. I have also found if you back up at low speed with the wheels cut hard one way or the other you can find bad CV joints, listen for the then to "Clunk" repetedly while turning.