5th wheel Truck combo = terrible ride
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) ...
Forum Discussion
I towed for years on a similar setup-- 2500 duramax with a 12k 5er. Never had the issues you're speaking of. Keep 65 in the front, 80 in the back. DO NOT under inflate your rear axle tires! This reduces capacity and can heat the tires faster and to a higher temp, both increasing probability of a tire failure. I would look at your "spring enhancement". That's probably the source of the roughness. I suggest airbags which provide a little more cushion while being tailored to your load and possibly the aforementioned trail air pinbox. Both help immensely. Hope this helps.
