I like the Kosei rims.....
If you are going with 15's you'll probably want to make sure you do not get a too 'thin' tire.
Here's what I have, and in order to make it look right I'd have to lower the car too much. (I can't go lower in the rear because of the sube motor)
http://www.vanbran.com/movies/bug/107_0760.AVI
I had to use spacers all around to keep some of the steering....
BTW, they are 15" Enkei rims.
Rob.