A cargo protecting system for a pickup truck includes a metal support structure that is in a fixed position relative to a pickup truck. A bed floor is fixedly supported by the metal support structure, and the bed floor includes a first support surface for directly supporting cargo, wherein the first support surface is substantially coplanar with a plane. A first chamber is disposed substantially beneath the plane and can be defined by a first shell having first and second openings. The first chamber is accessible from above the plane through the first opening, and the first and second openings can be of sufficient size and dimension to allow the passage of a spare tire. Exemplary embodiments can include a second chamber disposed substantially directly beneath the bed floor and adjacent to the second opening, wherein the second chamber is separate from the first chamber and accessible from the first chamber through the second opening. The second chamber can be configured to provide a storage location directly beneath the bed floor for substantially an entire spare tire. In certain exemplary embodiments, a closure member might be provided along with a securement mechanism and an opening mechanism.