dpgerson wrote:
.... What differences can I expect if I go with the airbags uninflated?
Each truck/TC will be different, depending on the springs. I have a 3900 lb TC on a '04 Dodge 4x4 dually. I have air bags, upper and lower OEM overload springs. It has upper Stable Loads.
Without the airbags, the Stable Loads reduce the rear squat by about two inches less than without the Stable Loads. I think overall, my truck with Stable Loads squats about 2 inches.
With the airbags at 70 psi, the Stable Loads are about 1-1/2" from the overload. The airbags reduce the squat by at least two inches, which is the trucks normal height. The rear of my truck is higher than front without the TC.
The overall ride with the 70 psi in the airbags is smoother. There is noticeably more sway. The additional sway is very little, but is noticeable. I have not experimented enough with the air pressure, but it is obvious to me airbags will be smoother than just overloads.
With no air in the airbags, the ride is not as smooth. I feel more of a stiffer ride. It is definitely not as soft. With no air in the airbags, the sway is obviously reduced, not eliminated. The rear of the truck is about 2 inches lower than with the airbags.
Bottom line is it really makes me no difference if I do or do not use the airbags. My wife prefers no airbags.
Wayne