Definitely worth it- we get an extra grand back on the new X5, 10-15% discount on parts and their magazine (Roundel) is the best club magazine out there. Membership has paid for itself many times over.

I'm a member of the Porsche club too and their magazine (Panorama) doesn't even come close. However, the Porsche club events do blow away BMW's- our own local chapter does six to eight DEs a year at places ranging from Mid-Ohio to Watkins Glen, plus lots of autox and social events. The local BMW club does two DEs- one of which is at a 1.1 mile training circuit. Not many autox and even fewer social.