For the 17" wheels 215-45/17's are recommended.
I've been on those for over a year with O.Z Superleggera wheels without drama.
You could probably go to a 225-40/17 as well, but it might be a tight fit inside the wheel wells.
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.