I lost all 4 of mine too when I first bought the vehicle, but I don't think they were stolen because I very rarely parked the car where that would happen. I think they just came loose and flew off while driving. Having said that, none of my replacements have gone missing in almost 2 years! Wierd....

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'08 335i Coupe - Barbera Red / Saddle Leather / Light Poplar Wood / 6spd Manual
Options: Sport, Premium, Cold Weather, Comfort Access, Active Steering (awesome!), Power Rear Shade, IPod Adapter, Navigation w/IDrive
Mods: M6 Wheels, Split Armrest, M-Steering Wheel, Euro Light Switch w/Rear Fog Lights, Short Shift Knob w/Matching E-Brake Handle, Clear Reflectors, CDV, Clear Bra

Retired:'04 X5 4.4i