I owned 2015 Ram 1500 Limited and it had a 4 point air suspension. It was an amazingly sophisticated and tightly engineered system that would constantly adjust to the load and speed. It would even automatically lower a few inches at highway speed. If you have that system, I suspect that 4WheelCamper doesn’t understand what you have and how it works; it’s not just factory installed rear airbags. I never had a camper on that truck but I did over load it once or twice (as most truck owners do) and it wasn’t even noticeable as the air suspension automatically adjusted. As tightly engineered as that system is, adding aftermarket airbags may effect how it performs. I was actually concerned about changing tire size. That said a higher load rated tire is always better.