I've bought a used 2005 M3, I wanted to take your idea. Do we need an anti-theft wheel lock or some other kind for security device against theft? The car looks like it has some alarm built in because the lights flashes when I lock it. Thanks

No point, if you have double locking locks, theives have to break glass or cut steel to get inside the car. No point in a wheel lock when they can just tow the car away.

Beware of where you park the car and always lock the doors, and you'll be fine.

If you have the flashing red light then you have the bmw factory alarm.

If you have the flashing red light then you have the bmw factory alarm.

Not necessarily....

Make sure you remove the valet key from the owners manual case.

depends on where you live..