Originally posted by Pink Kona
Turns out the bike shop mechanic had a wonderful suggestion of swapping the front and rear tires every 1000 miles. The rear is typically the first to go - and by trading the tires you can get the most out of your tires. And also prolongs you spending about $50 per tire replacement.
Here's a very different take on that.

http://sheldonbrown.com/tire-rotation.html