Thieves break into cars and steal radios all the time. I've had my stuff stolen before, and not only did I not blast it, but I doubt it was actually capable of getting loud enough for anyone to hear it outside the car anyway. And this was in a piece of crap car.no. unless you drive an Audi, MB, BMW. thieves don't look into a car and think "i want to steal that radio". when you drive around with your music loud or show off what you have, people decide to steal what you have. i've never had my car broken into b/c I don't show off my systems and I don't drive around with music full tilt.