SO AWESOME!! Well back to norms now... yes this is the best family of RV'rs ever on a forum...rookies take note of the old school here...we will figure it out with experience in the field, but we all learned something from the OP.. ..LOL!! Unusual tire wear is a sign of failure and should be taken very seriously. A tire bomb is no joke and could ruin your vacation or even kill someone...if you have this kind of issue it needs to be corrected ASAP! It is not if, but when? I also would say that a tire monitor system is a good investment and a good insurance policy if you want piece of mind...With that much friction it would have showed that that tire was overheating...and could have been corrected long before that much wear happened...surprised it didn't go BOOM! yet..