Steve Cassini has the right idea. Even if you have "fix a flat" you're still dead in the water if you have a cut sidewall or lose enough air to lose bead contact. Even if your cell phone works you'll probably be out of range if you're "on tour" in the boonies and if you do finally reach a flatbed hauler how many hours do you wait? And when you finally get hauled to civilization you STILL don't have a spare. BRE has the answer for the Superformance Coupes with a narrow spare that fits easily in the back and works both on the front and the rear with a Limited Slip Differential! check it out at
www.bre2.net. Badger