I took my camper out for a shakeout cruise last Saturday here in Fl. in preparation for a trip to Tn. next week. I did a 20 mile loop which included interstate driving. I was going 65 to 70mph. The outside temps were in the 90's. I stopped once at a rest area and walked around the camper and layed my hand on the wheel. It was pretty warm but not red hot by any means (I didn't get burned). Both wheels felt about the same. I just had replaced the bearings about 1000 miles ago on the wheel the felt slightly warmer. How much heat is acceptable and should I be concerned?