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[sixonthefloor]

Thanks to all who responded.

The trailer, ready for a trip, weighs 11,320. 4860 on the rear axel, 5040 on the front axel and 1420 on the hitch. The tires are rated for 2680 at 80psi. The wheels have metal velve stems.

The trailer came with 225/75-16 Goodyear Wrangler HT tires on it. After 2 years and 3 tire failures, I replaced them with the G-647 tires. A local tire shop really went out of their way to help me. They adjusted the 3 tires that failed and gave me a good price on the 5 new tires.

We have towed the trailer about 23,000 miles in the last 3 years but this is the first time we have been crazy enough to travel across the Southwest desert in summer.

Holiday Rambler in all of their wisdom did not leave enough room for 235/85s and as far as I know there is nothing higher than a load range E available in 225/75-16s. I would not only have to lift the trailer but also put a different suspension on to get enough space between the axels.

After the second tire failure, I put a tire pressure monitor system on so at least I knew right away when the 3rd tire failed.

Maybe I have too much information now. I always check the pressure in the morning with a digital pressure gauge and then put the monitors on. I am just suprised at how much the pressure increase is from morning cold pressures to afternoon hot. A 15 to 17 psi increase seemed like a lot to me.

When I thought about what another 20 degree or so increase in temperatures in addition to what I had already seen could do to the tire pressure the little red lights in my head started going off. I thought "there must be some safe pressure limit that I should not let the tires go past".

Oh well, I guess I will only worry if the pressure goes down while I am towing.

Mark