I've got 15x6.5 Borbet 'B' with 195/55 Dunlop W10s. The tires are nice 'n' sticky, but look like they'll only last 20 or 30k (but they were only $55 apiece, so not too bad). I think they replaced the W10s with something else this year, though.
Hmm... I don't think I've ever posted a picture. Since Borbets aren't that popular, here's a pic:
