I was making my bi-weekly 565mile trip home Saturday. After about 85 miles out, I heard this roaring from the rear. After pulling over, I discovered my right rear Michelin MXV4 with 54k miles had destroyed itself. Evidently, it lost air and ran hot. Luckily, the wheel wasn't harmed. Then, I found out that my temp spare that I have been hauling around since 1997 wouldn't fit. The bolt circle diameter is too large. Not having AAA, I called 911 and got the HP # and they gave me a local tow truck service #. After a couple of hours and $195, I was back on the road with a new tire. I was told it was a cheap line of tire made by Michelin, a winstar or something like that. It costs $80 plus tax and installation. Ahh, the joys of working away from home.