If you wheels are spinning that long they certainly aren't tight enough to generate any heat. Try switching the bearing around and see if the symptom moves with it. I would think it's a matter of breaking in more than anything else. After you do the temperature test see if the nuts need adjustment. I'll bet they will.
But put a few miles on the trailer first. Everything needs a bit of break-in.
But put a few miles on the trailer first. Everything needs a bit of break-in.
