On August 10 I was 50 miles from the home base when the right rear tire on our 2006 BH 3600 blew out, but damages was minimum. On August 15, 25 miles from home the left rear tire blew out, damage extensive. Before both trips I checked tire pressure and it was at or near the 110 printed on the side wall. I called the Trail America compamy following the first blow out and was told there was nothing they would do except sell me a new tire and ship it to my home. No one can tell me why I am experiencing the tire problem, and upon further inspection I found a 2 inch cut in the side wall running from the top towards the rim. It is a clean cut, the type that looks like it was made with a sharp knife or razor. I am in the process of replacing all tires, but would like some answers as to why the blow outs all of a sudden. Has any one else experienced Trail America tire failure?