I had 14% tint on my car (on it when I bought it) and the only time I got tickets for it was on 95 and 64. I got those two tickets in about a years time. Nova cops never bothered me although I don't spend a ton of time in FFX, I live in Prince William County.

I don't think it's really worth it to get dark tints IMO. Usually you can get away with 35% but any darker and you're pushing it. Not to mention the third ticket you get is a felony if it's not removed so you'll end up spending a lot of money for pretty much nothing. $150+ tint, $100+ per ticket, $65+ to remove it.