There is a great BMW Club event run by Patroon Chapter of BMWCCA in October- Vintage at Saratoga
http://www.vintageatsaratoga.com/
"2013 marks the fourth year of Vintage at Saratoga. This year we are gathering on the lawn of the Saratoga Automobile Museum in October so that we may pair with the opening weekend of the BMW Vintage and Classic Car Club of America’s week long holiday. While the two are separate and stand alone events we will join in on a few shared activities. October also marks the closing weeks of the museum’s BMW exhibit and so attendees will also be treated to experience some of the very finest classic BMWs cars on the floor of the museum."