I saw a spare advertise by a German parts supplier in the Potomac, Maryland area. They had a spare that has been mentioned in this thread, so I called and the seller refused to supply the diameter of the inflated spare, since this is a space saver tire. One thing must be taken into consideration before it is used to replace a flat in the rear of our Crossfires. The circumference of the spare MUST equal the diameter of the 19 inch rear tires. If this does not match, and it varies in size, it WILL damage the differential. It is not critical when it is used on the front end of the car. So my suggestion is to measure the circumference of the spare and the standard 10" rear tire on your Crossfire, just my 2 cents...

DT Menace