The truck is an 06 3500 reg cab dually with 53k on it. Have the new steering on it from a 2009 joints are all tight has about 4000 miles on it ball joints are tight have about 9000 miles tops, thuren trac bar and 6in lift about 5000miles all bolts tight no movement or play greased regularly. Tires are balanced and all equal with air have about half tread left good shape 265/70r17 bfg rugged trail load e. Had an alightment done about 3500 miles ago was only a little off made no differance still wonders all over the road. What can it be startn to drive me nuts to the point i dont drive it. Need help

 

I'll bet it's the tires.