You can do either a vacuum bleed with a vacuum can called Topsider
http://www.northerntool.com/shop/too...FTJp7Aodq14ACw
or you can do Motive brand which comes with the correct BMW (and many foreign car) caps. I have used both extensively they both work well. I like Motive better for a one man application since all you do is fill the container and pressurize the bottle pumping it up to over 10 psi then go break the bleeder screw loose until new fluid comes out.
Here you go
http://www.motiveproducts.com/
You might have to pump the bottle up a couple times as you drain all 4 wheel cylinders but it works very well...