If you're wondering about when your tires were manufactured, there is a date code that shows up on the side wall. I was doing a little reading about this, since it's now become a consumer hot topic in the automotive world, and realized one of my sets of wheels had an old set of slicks that were manufactured just as Ronald Reagan was leaving his second term in office
here's a link to were to look
http://www.tirerack.com/tires/tirete....jsp?techid=11