Bimmer.org - Useful discussion of E46. Tons of information and fun crowds. Also a group therapy for those waiting for their cars...

Pacific BMW - Lowest price on parts and accessories.

BMW of N. America - Official Site. Look up for news and events.

Bavarian Autosport - Accessories for E46.

BBS Wheels - Official site of BBS.

BBS Japan - Check out some of cool BBS wheels sold only in Japan.

Club E46 - Information, news, and picture galleries. Japanese

BMW@FUN - Interesting surveys, discussion areas and links. Japanese

Team E46 - Discussions, pictures, and info. Japanese