WARNING: This page is about a different car, the 2013 BMW Z4, 2012 BMW Z4, 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.
OIL PUMP WITH STRAINER AND DRIVE SPECIFICATIONS
Oil pressure at idle speed with engine at operating temperature
min bar
1.5
Control pressure with engine at operating temperature