[MENTION=48405]AlmostTrick[/MENTION]'s point about defective tires is a pretty good reason to try them out. Nevertheless, despite having experienced that a couple times, I'm too lazy to replace tires that are still good. Heck, half the time it's too much trouble to rotate front to back when I wear out a rear tire.

OP, you obviously need a couple more posts about how your current tires are wearing like iron after N miles, you haven't had a flat, the sidewalls aren't cracking, etc. Make the jinx work for you!