The only way to boost the payload rating is to take weight off the truck: removing the rear seat or bumper, using lighter wheels and/or tires that meet gross axle weight rating requirements, and so on.
Can I exceed my payload capacity?
As such, exceeding payload capacity is one of the most dangerous things you can do as a driver. Consequently, a driver will typically wonder how to increase the payload capacity of a truck. While a vehicle has its ultimate limits, payload can be enhanced and maximized with the right accessories and suspension parts.
Does adding air bags increase payload?
Can adding an airbag to your existing suspension allow you to carry increased payloads or tow heavier trailers? The simple answer is, no! It's important to remember that the addition of any airbag system does not allow higher payloads or towing capacity to your current vehicle.