Actually. In California, it is legal to tint your front windows. It has to be no less than 88% but there are some exceptions where you can lower it to 70% VLT rating, Anything below that is illegal for the front. The back windows has no limit. You can tint them as dark as you want as long you have both side mirrors.
The windshield only allows the 29" below top portion of the window to be tinted. If you tint the whole windshield it's illegal, plus it's stupid. Why would you risk your life tinting the front windshield? I don't understand that.
I had to study for this while I was training to be a CHP.....obviously it didn't work out. I'm thinking about applying again next year.
California Vehicle Code 26708
V C Section 26708 Material Obstructing or Reducing Driver x2019 s View