Thread should be wheel well. I took delivery of my sky today and drove it home. There was a thumping noise in the rear when coming to a stop in "N" (manual). I took it back and my service manager put it on the lift. The rear tires are rubbing the plastic inner wheel well on the side of the doors. There are rub marks on the plastic. When parked, I cannot place my finger between the tire tread and the plastic. It is too close. Might be a design flaw. Has anyone else experianced this? My service manager took pictures and is calling Saturn.