Abstract: The wheeled suitcase includes a storage compartment, a retractable handle extending from a top surface of the storage compartment, a pair of primary wheels extending from a bottom surface of the storage compartment, a panel pivotally attached to a lateral surface of the storage compartment at a first end, and an auxiliary wheel system pivotally secured to the lateral surface. The auxiliary wheel system includes a generally U-shaped frame, a fixed plate extending across the frame, and a pair of secondary wheels extending from a frame bottom. The fixed plate includes a plurality of grooves to releasably support a second end of the adjustable panel. The auxiliary wheel system can be secured in a plurality of adjustable positions to support the weight of the wheeled suitcase in varying inclined or tilted positions.