Here's a great application guide I used when I bought my aftermarket wheels...
http://www.wheeldynamics.net/appguide.html
Your fronts will probably be fine, but the rears will require a 15mm spacer. Our cars require a 50 mm offset to clear the struts.
I ran wide spacers in the back and had no problems, but did find that any wheel imbalance or tire issues were accentuated with spacers on the rear end.