As I wait for my Rumion (I'm in Japan), I was online and found this site. 
http://www.fujicorporation.com/ecb/?direct=sim.

It's similar to Tire Rack's wheel configuration thing, but it also has optional backgrounds and the ability to drop your ride. Not bad, not bad at all. It really helps me get a clear idea of what the wheels will look like on my Roomy.

Some Japanese skill is helpful to use it, but the site has English also.