I believe that is similar to the size SVTCole chose for his SVT that he was AutoX'ing.
He wanted a smaller diameter, lighter combination that kept him in a stock class. He seems to have done well at the SpringZing AutoX (check the AutoX forums for more details)
The one concern is the weight rating of those tires. They seemed really low, for the Contour application, and especially for AutoX use where you just might have one wheel off the ground and half the mass of the car standing on one of the two front tires.
That would by my only concern, could such "small" tires adequately support the weight of the car.
FWIW,
TB
Tony Boner
Personal: 98cdw27@charter.net Work: tony.boner@sun.com
Saving the computer world from WinBloze as Unix/Solaris/Java Guru
http://www.sun.com 1998 Contour SVT Pre-E1 618/6535 Born On Date: 4/30/1997
Now with Aussie Bar induced mild oversteer.