Bingo. Well, the wife let me drive
her 
truck again today. I played with the tire pressure and brought it down a lot. It still sucks hard on these roads. At 65, it really sucks. At 80, (speed of traffic) it feels like you're driving a fish that's flopping down a road which is undergoing an 8.5 earthquake.
At 55, its not so bad. But if you go 55 in any lane in California, you're going to get shot.
Though I suppose I love my truck, even if its built on a frame made from recycled rubber bands. I mean, I suppose having a flaccid truck is a small price to pay to drive the meanest looking, fastest half ton truck you can buy new.