This spare tire carrier kit can be added to the APT models. The Triton 15430 APT Series Utility Trailer Spare Tire Carrier Kit bolts right to the standard side kit of the APT Series Utility or ATV trailer. With the large 15-inch tires used on the APT series, this is the best spot for mounting a spare tire. This spare tire can be locked in with optional padlock. The kit comes with hardware to install the spare tire carrier kit.