36ft 2000 Itasca sunflyer I suppose you might call this a breakdown or you could call it a piece of tire story. we were south bound on I75 when a piece of tire (not verry big)appeared that i couldn't miss so i went over it. NOT a good thing!! as best i can tell the piece of tire hit the tail pipe, knocked it into the left rear tire which ran over the end of the tail pipe removeing every thing after the catilic converter. that was not all, the exaust pipe goes up over the drive shaft so the tail pipe removed the drive shaft. didn't go far after that. the exaust system was a banks system so parts had to come from cal. they sent almost all the parts. I would suggest avoiding tires.