I run 35psi on all four corners.
My 2011 X5d w/sport and 20"s (no 3rd row) recommends 33/33 on the door jam...

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2015--F15 X535i; 2015--F82 ///M4 [ED 6/26/14]; 2015--V60 Polestar (#62:80)*; 2012--E92 335is*; 2011--E70 X5d; 2011--E89 Z435is*;2009--E89 Z435i*;
2008--E92 335i [ED 2/23/08]*;2007--MkV GTI*; 2006--E90 330i*; 2005--E83 X3*; 2004--E83 X3*; 2003--E46 325Ci* *retired