I recently made a huge cosmetic change to my '05 Limited Roadster, dumping all the silver trim (still need to do the roll hoops) and silver wheels for matte black. The wheels are TSW Doningtons in 18 x 8.5 front and 19 x 9.5 rear with the stock Continental tires.





I like several of the TSW wheels currently available; I almost went with the Mallory's (TSW Alloy Wheels - the Mallory 5 in Silver with a Mirror Cut Face and Matte Black | www.TSW.com) but I also like the Mugello (http://tsw.com/alloy_wheels_mugello.php), Croft (Alloy Wheels by TSW - the Croft in gunmetal| www.TSW.com) and Nurburgring (TSW Alloy Wheels | The Nurburgring in gunmetal and matte bronze| www.TSW.com) styles. All of these are full face wheels rather than deep lip style, which I think looks better on the Crossfire due to that flat flange like area around the wheel openings.

Since your car is Machine Gray (a great color, by the way) I think that any of the silver wheels with the black or gunmetal inner trim would look great. You'd be keeping with the silver trim theme but with a more open wheel design. I think black would look great with Machine Gray too, but I don't really like black wheels with all of that other exterior silver trim on our cars. Which is why I changed all of mine to a matte black to match my wheels.