A better question is what 15" tires are available. Because if you want something with grip in a 15" offering, you're pretty much out of luck. If all you plan to do with the car is go to car shows and Car & Coffee you'll be fine. On the other hand, if you think you'll be wanting to do any open track or auto-cross, plan now for a second set of wheels and tires in a 17 or 18 inch size.