The past two or three times i have had my truck out I have noticed while at slow speed (<10mph) and not accelerating I am noticing a rythmic thumping. Similar to a bad hub/wheel bearing. I have jacked up each wheel and checked for play in the bearing and did not find anything to obvious.

Is it possible it could still be a hub, or more likely something else?What couldI look for?

 

How many miles on it, have you replaced the 2 bad u-joints on the front drive shaft?

 

Just hit 140000mi, replaced to u-joint about 12000mi. ago and greased twice (every 5000mi.)

 

hopefully I can rule out tires, I have about 25-30% tread life remaining. No signs of uneven wear. ???

 

Rotate the tires front to back and see what happens with the noise, if it moves from the front to the back...its your tires.