Tire inflation pressure

rfsod48 wrote:
I have seen it posted many times to inflate tires 5-10# over rv listed tire pressure. Why would you do this?

Because even if you weighed the coach today, and you set your tire pressure at the exact pressure according to the tire charts, your weight would start shifting as soon as you start your trip. My coach holds 75 gallons of fuel, or approximately 480 pounds. As I use fuel, weight shifts. I usually travel with some water in my fresh water tank. Lets say 20 gallons in my 60 gallon tank. That equals another 160 pounds or so that shifts as it goes from the fresh water tank to either the gray tank or black tank.
Of course we may stop for groceries along the way which can add weight but it will also shift weight as we store or use those groceries. The same thing happens as your clean clothes move from the closet to the dirty clothes hamper.
Basically the weight of your coach is an ever changing number on each wheel. If you inflated it to the exact minimum amount of weight needed to carry the weight, you could easily go overweight by the second day of your trip, only because weight has shifted from one wheel to another. The extra 5-10 pounds allows for weight shift and also allows you a little protection if you have a very small leak and lose some air during your days travel.