[Motor31]

The best thing you can do to extend the tire life is to make sure the weight of the trailer / axle is inside the tire's range and that the tire is inflated properly to the load when cold before you move the rig.

The weight will require the services of a scale and preferably someone like Stacy for an independant wheel weighing.

The second part requires a guage that is reading correctly. That's a situation that you can't count on just buying a guage off the shelf. They are really not callibrated that well. If you can get to a tire store ask them if they would check your guage against their master guage. If it reads accurately set it aside and get another guage and check it against your "master guage". If it reads closely use the new guage to set the pressure and your "master guage" to check the accuracy of your working guage from time to time.

How ever you calibrate your own guage, never figure the one on the airhose is reading correctly. Use a seperate guage to check the tires and check them every day you are traveling before you move. It's part of my pretrip check before I hook up the truck.