[Rod Spohn]

I would say use the pressure stated on the door jam if running stock tire or equivalent. But if you have upgraded your tires use the pressure stamped into the tire. When hooked up you probably want to go at or about at the max pressure to optimize the weight limits. Less when running unhitched for a better ride. As for the airbags, people use them for different reasons. Once your truck sits level add or subtract pressure to get a ride you like. Plus you can adjust for bad roads to further control bounce. My Truck I run 45 to 50 lbs.