The Stovebolt Site Forums The Shop Area Driveline ft end wandering - '49 Burb

Here's a resource for tire inflation. It may contain your tire size, although may not be entirely valid if you've mounted the tires on skinnier rims than the size calls for. It involves weighing each axle, then inflating to the required load. Modern tires on an AD truck would typically have much higher load capacity than needed. Note that this is a Toyo document, but that doesn't matter, as the tire size is what dictates.
Toyo Load/Inflation tables