OP again. Regarding TV tire pressure - I have a Ram 1500 gas guzzler (5.7L). I've put 100,000 miles on it, pulling the TT maybe 25,000. When on our long trips we carry the usual stuff in the truck (chairs, tools, a pancake air compressor, charcoal grill, etc., nothing really heavy) We'll have a couple of heavier things in the truck this time, maybe an extra 125 lbs. The truck is driven empty when we're not RVing.
I've always run the pressure given on the door sticker (35 psi). I've always had very even tire wear, and gotten decent mileage out of the tires.
BTW, I don't remember the exact tongue wt. when I had it weighed, but the guy said it was within the recommended range. Also, I have had no towing issues so far, such as sway, squirrely steering, etc. I never drive over 60 mph. I have new Michelin tires of the original size, and the weighing guy with Escapee's said my whole rig was within all the guidelines.
Should I run the rear tires at a higher psi on this 2,500 mile trip?, Especially since I'll have a little more weight in the back of the truck?