Our mechanic found multiple flat spots on my daughters car during the last maintenance run. Looking through your FAQ and discussions I noticed a lot of skids and brake locking going on. My daughter doesn't drive like that...she's too afraid to. (Giving the benefit of the doubt.) Plus I would figure the flat spots would be on more tires. We queried WalMart (where we bought the tires) if it could be a defective tire. The manager said it was due to bad shocks. Now, I'm no mechanic but that just doesn't make sense! What do you guys think?