5th wheel Truck combo = terrible ride

Wood chip wrote:
It is just painfully rough going down the road. Here are my stats
2015 chevy 2500 Duramax crewcab standard bed ( weighs 8,000lbs at cat scale)
2015 Glacier Peak ( weighs in 10,800lbs at cat scale)
Pin weight 2,200lbs at cat scale 20.3%
Drive axle 5360 lbs
Steer adel 4840 lbs
Truck tires at 80 psi
Trailer tires at 80psi
Bilstein 5100's
"Stable load" spring enhancement kit
B&W Patriot hitch
Standard Lippert extended pin box



Should I try to take some weight off the pin? Should I drop tire pressure ? Not sure where to start? I feel the weight of trailer lunging and pulling the truck pretty bad.

You only need 80 psi in the tires if you are running max tire load (which I suspect is 3415# per tire.
In which case I think you could run 60psi in the front and 65psi in the rear. But you should check for your specific tire size against one of the tire companies load/inflation tables.
Here is one for Bridgestone/Firestone.
That would make a HUGE difference to the ride harshness.

FWIW my tires are rated for a max load of 3042# each. I run 45psi front and 70psi rear.