Here in NJ any tint on the front windows are illegal. Why? Because years ago a state trooper was shot and killed when he walked up to a car with tinted windows. So the typical NJ knee jerk reaction was to ban tinted windows on the people of NJ. But if you are in law enforcement, your issued vehicle can have the front windows painted black if you want. You know, one set of laws for them, and one set of laws for us.
With that said I've had tinted windows for over 15 years and got pulled over maybe 3 times for that offense. Also helps that I have a get out of jail free card so cops usually let me go without a ticket. I think it really matters what you drive. If you're rolling around in an all black civic with white wheels, you're probably more likely to get pulled over. As per inspection, we only check emissions so you can roll up with a cracked windshield, no headlights, and tints and still pass if you're not polluting the environment.
Just a tip, get tint that has heat rejection. It will keep the interior cool and prolong the appearance. It's usually tint with ceramic, no idea what that means but get it. I have to get mine redone cause I just have dyed film and it's terrible.