I had my previous BMW (Z3M roadster) in for servive some years back and the service department called me to inform me that I had a screw in one of my rear tires and did I want to have it removed? The towering intellect of some of these service writers amazes me! I wanted to tell him "No, but one the other ******* rear to even them out", but instead I thanked him and asked him would he please repair the tire.