Max size tires for stock 15 inch wheels

[oldcelicadude]

Anybody know what is the widest tire I can put on the stock 15 wheels without messing up the speedo? The 195/60-15s are a bit narrow, but I can't move up to 17s yet.

[NoCones]

use this calculator to compare tires sizes:
http://www.secret-secret.com/turbo/DIY/tirecalc/turbotire.html

You can definitely get up to a 225 on the wheel without much trouble, but I'm not sure anything beyond 205 is going to do you much good.