I also got wheels for the factory tires. Dai Radials from canadawheels.ca. Shipping was a super fast 2 days and they came with hardware (including correctly-sized hub rings). The dealership mounted rubber on rims, balanced, and swapped the winter wheels off for $89.95 on Monday. I'm happy with the results.
http://micra-forum.com/images/dto_ga...s/271/1229.jpg