I was told that I may need to get mine replaced. The other day I was driving with a friend and the roads were barely wet because it had rained several hours before and as I was trying to stop at a red light my car skid several feet and I swerved a little. I'm hoping it's because my tires suck and not my brakes. But anyhow, how much would I be paying for them? I'm assuming it's not cheap so I may end up buying them one at a time. By the way I've had my car for four and a half years and have only had one tire changed (because I got a flat).