Houston, we have a weight problem

WarPhil wrote:
My 15 Ram 1500 has payload capacity of 1260 lbs.

According to the door jamb sticker but what you really want to know is how much your truck actually weighs as it sits there ready to be hitched to a trailer and based on that how much payload capacity you actually have to work with. To establish that there's only one way - go weigh the truck with a full tank of gas. If you're in it at the time subtract your weight from the scale reading, if you don't throw all your weight distribution pieces in the back of the truck add ~ 100 lbs to account for it's average weight. The result will be your particular truck's actual real world curb weight as it's ready to be hitched to a trailer. Subtract that number from it's GVWR and you'll then have it's total real world payload capacity, that which you will use to account for the weight of all people and all cargo in the truck ... the remainder is your allowance for gross tongue weight transferred from the trailer to the truck. From the numbers you've posted to date there's no way this truck will tow that trailer you mentioned and remain within it's various specs. Airbags do nothing for you when it comes to towing, only using a properly sized and adjusted weight distribution system will transfer some of that gross tongue weight to the truck's front steer axle where it belongs and some back to the trailer's axles ... airbags won't.