Re: Thumping Noise
I'd keep things simple and have a tire rotation done. By putting the front tires at the back will rule out if it is a misaligned or improperly worn tire that's causing the noise. Is the noise the same, louder or non existent when you turn corners?
Worst case is a wheel bearing is on its way out. You can check this yourself by lifting the wheel in question and placing one hand on top and below the tire. If you can rock it and you notice play, then the bearing is the culprit. Generally wheel bearings will get louder with speed as they wear out. A lot of bearings produced now are sealed units (not greaseable). Otherwise if the tires are ruled out then it could be a variety of things, such as pitman arm, CV joint or suspension bushings which generally squeak at lower speeds and diminish to nothing on the highway.
'00 Durango R/T 360ci 290hp (modded); 138,500m
'06 Pontiac G6 GT 3.5L 220hp; 44,000m
'12 Chrysler 200 Limited 3.6L 283hp; 13,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!