Today I took a drywall screw in the back tire. The bike (happened to be a friend's 1976 Sportster) was AAAed to the nearest motorcycle shop which happened to be a Harley dealer. They were very nice folks. They did tell me that even though the tire on the back was effectively brand new, once it had been punctured it could not be reused. It had to be replaced. This is a tubed tire and the hole was small. I thought for sure you could just screw the drywall screw out and either patch or replace the tube. This made no sense to me and I wonder if anyone can shed light on their opinion. Perhaps I made a mistake telling the fellow behind the counter that my regular rider was a BMW?