At least once a week while driving out of the blue my truck will start vibrating really bad as if my tires were square,i'll come to a complete stop and start driving again and the vibration will be gone for a few days again.
Tires are new and presure set at 36psi.Anyone have any ideas,in 25 yrs of driving I never had a problem like this??

Thanks

 

Jack the front end and shake your wheels...see if they move...