Spare tire diameter

[sspeedstreet]

Hi! I'm afraid the only thing I own from a 986 is a set of 17" chrome turbo twist wheels. I'm mounting them on my 1988 Pontiac Fiero because I love the look and the backspacing is perfect for the car. It's a fair amount of work, with the 5 X 130mm vs. the puny 5 X100mm pattern that came on the car, but will be worth the effort. Of course with the pattern change and the bigger brakes going on at the same time, the stock 15" spare won't work for me any more.

My question is, can someone here tell me the outside diameter of the 986 spare tire? The spare storage space is limited and I don't want to order one and then not have it fit.

I appreciate the help,

Neil