Regarding checking temperature of the running gear at stops -
I bought an infrared temp sensor a couple of years ago, and caryy it in the truck. Just point it at the tire or wheel, squeeze the trigger, and immediate digital readout of the temps. I check all the tires & wheels at each stop ( I always do a walk-around when towing, to check things), makes it really easy to know what's going on. After doing this a few times, you get a sense of what thing's normally read, it will be easy to tell if anything ever gets out of 'normal'.
Many other uses for this gadget around trucks and trailers, too.
Of course, I'm a technology freak, but this thing is actually useful!