svt rims

can someone please tell me the size rims and tires on this mustang it looks AMAZING! http://www.youtube.com/watch?v=HIBBcE6Cc6k&feature=player_embedded#at=102

I need new tires on my 2008 GT. Looking at the NITTO 555's 255/45 ZR18. If I buy online and get installed locally I am looking at about $850-$950 dollars. My dilemma is, I can by a GT500 SVT take-off wheel and tire package for about the same price. I really like my 18" chrome bullit rims but...

I was wondering what the widest Tires I can fit on the front of my 1997 without rubbing. I have a set of Cobra 17x9's on Layaway and 285's for the rear, but I don't know what will fit on the front without problems and whats the skinniest you can put on a 9 Inch wide rim without it looking...