Good advice quoted from "WebSlave" a forum member on Keystone RV Forum...
"Loading, air pressure and speed are the biggest contributors to tire failure. Very few tires nowadays, fail from wear, most fail from improper useage and/or road hazards. While rotating tires can do no harm and may, in some instances, be beneficial, nothing can do more for your safety and tire longevity than using and maintaining them properly." I agree with this 100% after having had 7 Travel Trailers and one 5er over the past 40 someting years.