tire pressure class c

Desert Captain wrote:
"Follow the manufacture's label. They know more about their vehicle than we do."

No, they don't,

They have no clue how you will load. The ONLY way to properly inflate your tires is to load the rig as you would for a given trip and take it to the CAT scale. Don't forget to include the weight of your tanks, fresh, gray and black. Keep in mind that your actual weight can vary greatly from trip to trip and while a return to the CAT scale is not essential every time you will have a pretty good handle on what you are actually hauling.{it is probably a lot more than you think}.

Once you know what the rig actually weighs go to the inflation load tables from the manufacturer of your tires and follow those numbers. Blindly following the numbers on the door sticker or worse, inflating to the maximum on the sidewalls is a recipe for disaster.

While most folks leave with empty black and gray tanks not everyone gets to come home that way. Often, on weekends, especially on holiday weekends, the line at the dump station may be hours long. If you choose to drive home with full tanks you have added a lot of extra weight.
some folks run with a full fresh water tank while others assume they can just fill up when they get to the CG, either way that weight {coming/going} needs to be factored into the the load your tires are subject to.

:C