hey Pete, welcome to bmwboard. I will go google this and see what i come up with. All i know is that at my school people know well enough not to touch my car. but that doesn't make much difference when you are down in the city or something, there are some sweeeet alarms available out there. one other thing before i go off and try to find some legit info, i would think bmw's would be stolen less because of the level of technology that goes into not only their factory alarms, but into the ignition system and other subtle security measures. just my $0.02