The present disclosure relates to a low profile, highly aerodynamic swing-in-place style vehicle article carrier system for use on a wide variety of passenger cars and trucks. The system makes use of a pair of side rails that are used to support a pair of cross bars in stowed positions thereon where the cross bars are secured parallel to the side rails, or in operative positions where the cross bars are secured perpendicularly between the side rails. The side rails each incorporate a rotating end support subsystem which automatically elevates one end of its associated cross bar when the cross bar is moved pivotally into its operative position. This enables the cross bars to form a very low profile when in their stowed positions, but to be automatically raised a predetermined distance when moved into their operative positions, to thus provide additional clearance between the cross bars and an outer body surface of the vehicle.