Cstoliker wrote:
The original tires that came oem were Goodyear 159. They had stiffer sidewalls. They were stiffer all around. They all said max pressure 80psi on the tires.
Yikes...the Goodyear 159!
There was a big scandal surrounding the use of that tire on RV's...and though Goodyear never recalled them, they certainly stopped using/promoting them for use on motorhomes.
Link to one story.
If the sticker pressures were/are related to the use of that tire, you might want to take the earlier advice to contact the rig manufacturer as to whether or not they apply to replacement tires.
FYI:
The big monetary settlements won by folks who'd been using the 159's had to do with the fact that the tire was designed for light trucks, and not for RV use. I hope the LT's you bought as replacements don't suffer from a similar defect, and are in fact appropriate for use on RV's.