Crabman took the words right out of my mouth.
Any tire, any size, carrying any amount of weight, for any length of travel will heat up from the obvious friction and SHOULD ALWAYS be balanced. Even a static/bubble balance would help. At speeds up to 65 mph and weighing as much as/more than the vehicle you're pulling it with ... should'nt it have the tires balanced the same as your TV. Just one mechanics point of view. Take it or leave it.
Shane and Jana w/a 6YOB & 3YOG in tow
2012 Jayco Jayflight Swift 264BH
2002 Chevy Suburban 1500 LT 4X4, 5.3, 3.73
Curt Class V Hitch
Reese Dual Cam
I'm not sleeping on the ground ever again