From the bloggers at Everything About RVing.
Figuring out the proper inflation for your RV’s Tires is going to take a little work on your part. Even though your RV Manufacturer has tire inflation recommendations, they may not be correct. To determine the proper tire inflation for your RV’s tires you have to know what weight they are carrying and the only way you can do that is by weighing your RV.
You can weigh your RV at some truck stops, some RV Shows, Sand and Gravel Yards, etc. When you weigh the RV it should be fully loaded including food, clothing, full fresh water tank, passengers, towed vehicle, etc. Once you have determined the heaviest end of each axle you need to inflate all the tires on that axle to the recommended PSI.
Important Note: You should only inflate your RV’s tires when they are cold to get the proper tire pressure. If you try to inflate the tires after they have been driven you will end up under inflating them, because the air in the tires expands when tires have been driven on.
To read the full story by Everything About RVing, click here.