So I read about the CA laws regarding tint. The front is legal as long as it allows 70% of the light through. Mine are legal because they are UV only. But if this is a concern for you buy a cheap light meter and keep it in your car. Then if you ever get pulled over, you can show the cop the law and the results.

Otherwise, when you get pulled over, roll both of your windows down. Some cops hate tinted windows because they can’t see you after they’ve pulled you over.So you’ll end up getting ticketed for that plus whatever else you did.