I installed air bags to improve ride quality.
Before air bags the truck would rest on the overload springs causing a rough, jarring ride. Rolling bumps were not uncomfortable, but uneven expansion joints and sharp bumps would shake your innards!
After installing air bags and inflating to 55 psi the ride has improve tremendously. The truck no longer rest on the rough leaf overloads but instead the weight is carried by the air bags.
The ride is night and day different. After installing the bags, I do not want to drive without them.