Have 2017 ford 450 with a 1172 Lance. When on the highway and the tires go over where the pavemet connwects the truck wander bad. Have fight the steering. Tires have 3500 on them. They are continetal ...
I think it must be the tires as my F350 with Lance 1161, what is very close set up - drives like Cadillac and most of the time it is 2 fingers control. I have 62 psi front, 75 rear on 17" tires