There are two places which had the trim for my 2010 535i. Tischer and Penske Parts.
Penske Parts is a more exensive but thats because it is BMW of Warwick. You can ask for 20% off and you should get it. All in about $450.
These are the part numbers:
Front Right Door: 51337072884 and 51217207258
Front Left Door: 51337072883 and 51217207257
Rear Right Door: 51227135164 and 51357072888
Rear Left Door: 51227135163 and 51357072887
The second place is Tischer. Here are the link and blurb from their website:
Your Price: $286.95
Item Number: PKE60SHADOW*
OEM BMW E60/61 5 Series Matte Black Shadowline Exterior Trim Kit. Kit includes exterior matte black upper and lower window trims - giving your vehicle the shadowline trim option! Wagon version includes rear qtr glass windows and moldings. *Must include vin when ordering.
http://www.getbmwparts.com/partlocat...=889202&siteid =214672&catalogid=4462