When did the problem start? Underload means here you are pulling a trailer or a heavy load in back? How much? If a heavy load makes the truck roll smooth ,then it might very well be the tires.
~ BD. "You won't find me in an old folks home" Pioneer Florida Cracker 1958 Apache Stepside 1958 Apache 1/2 ton Panel 1959 Apache 1/2 ton Panel
