This discussion made me realize that on my '03 986S (which has been mine since '04) I have never checked the pressure in my spare. I've had 3 sets of replacement tires, but just forgot about the spare. On my list for this weekend!
That's a great idea to check your spare air pressure. I have a few of those that you can tell were low on air pressure when used. Some of them almost look like they were driven with no air in them at all and the side walls have marks from the rim wearing away on them.