A retention system for a vehicular spare tire includes a chamber having a bottom portion. A tray is configured for movement in a first direction relative to the bottom portion between an extended position and a stored position. At least one removable interconnecting member is configured to selectively interface with both the tray and the chamber for substantially preventing movement of the tray relative in the first direction. At least one guide member is configured to selectively interface with a back portion of the tray for substantially preventing movement of the back portion of the tray in a second direction relative to the bottom portion while the tray is in the stored position. The second direction is generally perpendicular to the first direction.