[JRTJH]

Don't forget the jack and socket to fit the lug nuts.... I'd strongly suggest you actually change a tire/wheel IN THE DRIVEWAY so you know whether you need a 3" or a 6" extension so your ratchet/lug wrench clears the tire. Nothing worse than getting to a "flat spot on the side of the road" (usually located on the bottom of the affected tire) and finding that you've got the correct socket to fit the lug, but can't put the ratchet on it because the "tire sidewall is too fat"..... OOPS.... And, even though the jack will lift the "flat tire" to clear the ground, will it lift the axle high enough for the "round tire" to clear the ground ?????

Any emergency repair should be "well thought out and accomplished in a non-emergency situation" (if possible) before actually required to be done in a real emergency.