I just got my new wheels and tires on my xB. I've had the xB since June and have been struggling with the decision of which wheels to put on it. Based on pics I've seen here, I finally decided to go with the Konig Heatsink. I found a great price on them ($129) at treaddepot.com and got 225/40R18 General Exclaims ($81) at tirerack.com. So far, I am very happy with both the wheels and tires. I think the heatsinks look great on the Nautical Blue.

Here are some pics:
http://i207.photobucket.com/albums/bb233/KY_chuck/Side1s.jpg
http://i207.photobucket.com/albums/bb233/KY_chuck/Front3qtrs.jpg
http://i207.photobucket.com/albums/bb233/KY_chuck/Rear3qtrs.jpg

Very nice!

looks awesomeness