While working on the 92-93 Judging Guide I had the occasion to inspect the "space saver" spare tire and carrier recently on a low mileage 1992 that I have. The spare had never previously been down. The spare was flat! If you own a C4 and expect to use the spare in case of a flat I'd advise you to check it out. It also gives you an opportunity to clean up the tire and carrier.