Id be surprised if they just pulled up in a car, broken into a secure garage that just happened to have a few grand in wheels in it. These guys a pros.
Feel bad for you man. Never had rims stolen but have had a $500 spoiler stolen of my old tl.
Car for sale http://www.e90post.com/forums/showthread.php?t=881526
JB4 G5 - Forge FMIC - VRSF V2 DP - Magnaflow 15529 Catback Exhaust - BMS Clutch Stop - BMS DCI - CDV Delete - Dinan Stage 3 Suspension - 19x8.5/10 Forgestar F14 Gloss Gunmetal - Michelin PSS - M-Sport Front & Rear - M3 Side Skirts - OEM M3 Decklid Spoiler - BMW Performance Grilles - ZHP Shift Knob - M-Sport Steering Wheel - M-Sport Door Sills