I was trying to read up and the state law here in California.. and the latest info I could find, stated that you couldn't do anything on the windshield, 30% on the two front side windows and whatever you wanted on the two rear side windows as well as the back window.
Please explain if I misunderstood anything.
Here is some info from CA Highway Patrol:
Can I put after-market tinting on the windows of my vehicle?
The main requirements for legal window tinting in California are:
1. The windshield and front driver's side and passenger's side windows cannot receive any
aftermarket tinting.
2. If the rear window of a vehicle is tinted, the vehicle must have outside rearview mirrors on both sides.
The law prohibits any person from driving any motor vehicle with any object or material placed, displayed, installed, affixed, or applied upon the windshield or side or rear windows, with certain limited exceptions.
However, legislation signed into law effective January 1, 1999, exempts from the above prohibition specified clear, colorless, and transparent material that is installed, affixed, or applied to the front driver and passenger side windows for the specific purpose of reducing ultraviolet rays. If, as, or when this material becomes torn, bubbled or otherwise worn, it must be removed or replaced.
http://www.chp.ca.gov/html/answers.html
However, here is some additional information regarding exceptions:
(d) Notwithstanding subdivision (a), clear, colorless, and transparent material may be installed, affixed, or applied to the front side windows, located to the immediate left and right of the front seat if the following conditions are met:
(1) The material has a minimum visible light transmittance of 88 percent.
(2) The window glazing with the material applied meets all requirements of Federal Motor Vehicle Safety Standard No. 205 (49 C.F.R. 571.205), including the specified minimum light transmittance of 70 percent and the abrasion resistance of AS-14 glazing, as specified in that federal standard.
(3) The material is designed and manufactured to enhance the ability of the existing window glass to block the sun’s harmful ultraviolet A rays.
(4) The driver has in his or her possession, or within the vehicle, a certificate signed by the installing company certifying that the windows with the material installed meet the requirements of this subdivision and the certificate identifies the installing company and the material’s manufacturer by full name and street address, or, if the material was installed by the vehicle owner, a certificate signed by the material’s manufacturer certifying that the windows with the material installed according to manufacturer’s instructions meet the requirements of this subdivision and the certificate identifies the material’s manufacturer by full name and street address.
(5) If the material described in this subdivision tears or bubbles, or is otherwise worn to prohibit clear vision, it shall be removed or replaced.
