It's more of a simple reason for them to pull you over. Its called PC to stop. If they suspect you have drugs, guns, gang affiliations or just want to check you out, etc. they WILL find a reason to pull you over and check you out. So having a simple problem with you car as such, it will be very easy to pull you over and do what they want. (most) Cops wouldnt pull over a grandma with a euro front plate just to mess with her and will hardly ever write a fix-it ticket for it, unless their panties were in a bunch that day.