Jim, one thing that you might have people keep in mind is the primary vehicle's spare tire as well as their TEOTWAWKI vehicle. It has not happened to me but look at all the people on the road who have flat tires thinking that they have a spare and then that spare is useless because it has no air. (Or it is missing.)Your spares should be checked for air at consistent intervals as well as checked physically checked at least twice a year. Another good idea that I have seen mentioned is keeping at least the gas tank half full. I have been doing this for years. - A.B.