Since my GT wheel deal didn't work out, I went and looked at a whole slu of performance 225 60R15's side by side and the Michelin Pilot had the fattest stance.
Not the cheapest - that's for sure, but the right look and shoulder.
The ride is excellent and ramps are a blast. I took her up to 90 miles an hour yesterday afternoon and it was sweet - a stitch of emptiness on the highway was too tempting..... not suggesting anyone do this

If you have the stock 15 X 7's and are looking for a little bit of beef and performance checkout the Michelin Pilot Exalto AS 96V

This picture isn't great but the width and bulge is just the ticket to make the car look more aggressive.



I'll post an angle side view of the car in the driveway after my day trip.

 

Deffinatly better, but sad the GT wheels didnt work out.