I have to agree to the 65 psi. We are new at RVing andhad 4 goodyear tires installed just before heading out on vacation. They were inflated to 50 psi at the tire center. We traveled 1500 miles and our tread depth dropped from 10 to 8.75. We researched the forum and inflated them to 65 psi and on the return trip dropped from 8.5 to 8 on the tread depth gauge. It looks to me that proper inflation will reduce wear. Of course, there are many external factors involved such as wind, rain, speed and road conditions.
Lug nuts: We also reviewed the forum and then bought a torque wrench. Afterviewing the following page we learned that none of our wheels lug nuts were tight enough and the left rear was extremely loose.
We will never be traveling again without logging tire pressure and checking the wheel torque. Logging the tread depth across the face of the tire may soon be on our list too.
Over Inflation: An old friend tryed to seat a tire by greatly increasing the pressure. Unfortunately the tire blew and he lost his forearm and had sever internal damage. Please be careful.