I thought this was a pretty good video...even though it applied to cars. Good to know when those tires were made on your bike. I looked at mine, and they were made Feb 06 and Jun 06. Might want to check the next time you put on replacements.
http://abcnews.go.com/Video/playerIndex?id=4826897 (http://abcnews.go.com/Video/playerIndex?id=4826897)