Re: Wheel Bearing Noise.. I Think ? Trouble shooting.
If the sound increases with speed then it could be a bearing. Best way to check is to lift the tire a few inches off the ground and place a hand on the bottom and the other on the top. If you can wobble or shake the wheel and there is even a little bit of play, that bearing is shot as the wheel/tire shouldn't move at all.
Worst case is that it's the axle. If you haven't had the differential fluid replaced in the last 40-50K miles along with getting the magnet cleaned - get it done.
Be careful though, as some shops will suck out the old fluid and replace the fluid leaving the crap sitting in the bottom of the differential. Only way to do a proper fluid change is to remove the cover, clean out the old fluid with a lint free cloth and wipe off the magnet. This also allows you to inspect the gears for damage. Then replace the cover using RTV sealant, wait half hour then add fresh fluid and away you go.
'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!