In one or more embodiments, a storage system is provided for use with a vehicle including a side wall and a rear wheel positioned below the side wall; the storage system includes a storage container receivable within an elongated space defined between inboard and outboard panels of the side wall, the storage container including front and rearward portions respectively positioned front and rear to the rearmost point of the rear wheel. The storage system may further include a leg portion for supporting the rearward portion of the storage container. The leg portion may be adjustable in length and may be attached to the elongated space or to the storage container.