I understand the new Thule roof rack for the '99 328 sedan will not be available until May. I had read a post here a few weeks ago saying it would be available in early April. I have called and emailed Thule customer support, and they seem to know nothing of the April "arrival." I just thought I'd post this for others who are interested in these racks. The message below is the April 13 response to my email from customer service.
The 3-Series 4-door uses a special rack called
the #753 Rapid Rack. It is not available quite yet, but will be ( so they tell me) by the beginning of next month. Thanks, for your patience, and understanding.
Thule Car Racks