Americas tire

I do it myself folks. A decent compressor with good volume and high pressure is not expensive and you can check your tires when every you want and not drag it to a tire shop. I, too, became tired of the tire shops telling me what the tire should be when right on the tire is max pressure for max load and I am pushing that number in weight. Same with the truck, door jam is unloaded pressure, to make the truck ride better. Pump up to max pressure when pulling and you will love your truck and your camper.