My '13 GT came with the air compressor and can of sealant instead of a spare tire and jack. I bought a wheel that cleared the brembos and put a scissor jack in the trunk. Had a flat in a rear tire yesterday. My car is lowered and the jack could not fit under the side skirt with the tire flat. You will need a jack that is less than 4 inches high when closed if you are going to add one. Hope this helps anyone who wants to be prepared like me.