[rohrmann]

Hopefully you have 6,000 lb axles, and if so, your rig is rated to only have about 2,600 lbs on each wheel, so 80 psi is perfect. Your wheels need to be rated to be 110 psi to be able to inflate over the 80 psi, so you are good. I have heard that some have only 5,200 lb axles, but not sure about your's.