I have a noise just like a bad wheel bearing. It sounds like it's coming from the left front but the inner and outer front bearings are new and so are the upper and lower ball joints. Could it be coming from the rear? I can detect nothing unusual from the rear with a stethoscope when the rear is off the ground, engine running, trans in various gears 1 thru 5 and wheels spinning. I am thinking of letting someone change the rear wheel bearings as I don't feel like getting into it myself. Any ideas? The noise is definitely related to wheel rotation.