I have the red ones on my Tour. Only one military cop ever said anything about them. I think he was just bored that night. He just said they are illegal because they are red. We reminded him the law states you cannot have red or blue lights on the FRONT of your vehicle, nothing about the tires.
NOW, the package DOES state they are for show ONLY and no street use, but as it's been said before, cops usually don't care about the tire flies, just the cyber eyes do they really throw fits over.