Thanks for the input guys. I'm going to replace the tires, give the car an allignment and balance the tires, if that doesn't fix it then i'll check everything else. I considered the wheel being bent, but the wear on that tire goes completely around, it does not break off at any point. I looked around the trunk area and undercarriage, but I dindn't find any signs of body work. Is carmax known for selling wrecked vehicles? The rear driver side tire might give me a defenite answer, since it's the same brand tire . Also, the flat tire does have the same wear on the outer wall, just not as visible.