exactly right!! Lowering the air pressure will do more harm than good. lower rolling resistace, huge heat build up in the tires, it's still going to bounce except the sidewalls will be taking the load. just hook it up and pull it!!

Mitch

I know it's not the same, but when I had a pair of sea-doos, I routinely pulled them around at 80mph. Never had a prolem but the two of them weighed half of what you empty trailer weighs.