Google "mike miller's old school bmw maintenance schedule". Mike is the technical editor for BMW CCA and is one of the most knowledgeable guys on BMWs. He recommends stock or Redline oils.
2012 Audi R8 V10 6MT, Ibis White/Black with Red Contrast Stitching
2009 Z4 sDrive35i 7DCT, Alpine White/Coral Red [Retired]
2010 335i 6MT, Space Grey/Coral Red [Retired]