It seems like I am not the only one who has trouble filling my tires with air. My bike pump (and even the original BMW pump) don't fit.
I just discovered this pump at my store. It has a flexible rubber hose that should do the trick and tucks away inside the pump when not in use.
http://www.lezyne.com/products/hand-pumps/high-volume#!Alloy-DriveI plan on getting it this week -- will let you know how it works.
-Danny