I think I'm going to get a 18x8(that clears Brembro's) and put a 225/60R18 on it with the jack kit. It will cost the same as that spare tire kit from performancespare.com but will have the ability to put on the rear or front, not just the front and have no spacers. Plus you can go 70mph without fear.
Here is a good option. Plus look at the weight. Note: you will need to have normal brake pads not roller skate brake pads.
http://www.tirerack.com/wheels/resul...rSpecial=false
http://www.tirerack.com/tires/tires....=yes&tab=Specs