I don't really have a functioning spare for the 911. I carry plugs and a compressor. Only had issue once, but was able to limp it less than a mile to a gas station for air, then hit up a couple more before getting home. Worst case, I have AAA (now with +

).
Mike, I destroy all types of tires. I usually have to replace the Toyota tires in 4's.. I have been known to flat spot all four severely. Hoosiers and staggered widths on the 911 don't help either.