Originally Posted by Bob Denman
Isn't that maximum pressure what they would use; to seat the bead on the rim?
Tire changer lubricants the tire and rim first, then only adds enough air for the tire to seat. After seating the tire then it is inflated to the proper pressure.
The 80psi on the tire sidewall is the absolute MAX a tire should be inflated to! Using the max pressure will give you a very rough ride and wear the center of the tires quickly.
Use either the door sticker or there should be a weight sticker by Thor that shows the proper inflation pressure.