Bummer about the lug key. I would switch to regular lugs all around and throw the "locking lug" in the trash. When is the last time you saw a car on blocks with no wheels?
'08 E90 M3 - Alpine White - Sold
'13 E92 M3 - Silverstone II - Sold
'04 E46 M3 - Jet Black - BBS E88, KW Clubsports, Brembo BBK, SuperSprint Exhaust, Recaro