I was changing my snow tires to summer tires and somehow stripped my wheel lock. I went to a tire store and they easily took off the wheel lock bolts with some kind of special bolt remover. Unfortunately, they don't carry BMW bolts and I've been driving all over looking for them but living in Bergen County NJ where most stores are closed on Sundays, I've been out of luck. I'm going to go to a dealership tomorrow and get some but was wondering how much damage, if any, I'm doing driving with four bolts on each wheel instead of five?