I'm screaming down a hill with a tailwind at a bit over 30 mph, just about 155 rpms and I threw my chain. It locked up the rear wheel and I surfed the back tire for what seemed like 10 seconds (in reality it was probably much less) and BAM, the tire blew, then I slid on the rim for a few more seconds and came to a stop. I can't believe I didn't go down - the back wheel was all over the place. The tire has a 5" section worn completely through.

That was also the first time in 25 years that I had to call for a ride home.

I guess I'll keep my chain tighter in the future.