Fun fact:
194 bulbs are not all the same.
Turns out the W5W bulb in the BMWs are 12V 6W instead of the conventional 5W common ones. They are xenon-filled 12V 6W size W5W bulbs.
BMW Part No: 63217160908
RMeuro is the cheapest I found it. They sell the OSRAM version (OEM) and it's at $0.97 vs the $4.xx at the dealership.
http://i.imgur.com/fSq17p4l.jpg
Passenger side is the 85 lumens 6W, and the driver side is the 50 lumens 5W. It isn't noticable in the pictures, but it is brighter in person.
On another note, I pulled the 194 map lights in my civic and they are 12V 8W....:rofl