Always confirm current law before you install
Window tint law can change, and it's enforced — a citation for illegal tint is avoidable. Treat this article as a starting overview, not legal advice. Before you commit to a shade, confirm the current rules with the California Vehicle Code or the California Highway Patrol, and we'll walk you through what's legal for your specific vehicle at the shop.
The front-window rule most people get wrong
In California, the front driver and front passenger side windows are required to allow at least 70% of light to pass through (70% VLT). That means the front side glass can't be heavily darkened by film alone. A lot of 'limo tint' you see on the street on front side windows is technically not legal.
The windshield can only have tint in the AS-1 area at the top, and even that has limits — you can't run film down the full windshield at a dark shade.
Rear windows are different
Rear side windows and the rear windshield can be darker than the front. Many drivers run a darker shade on the back glass for privacy and heat rejection while keeping the front legal. We'll help you pick a combination that gives you the look and privacy you want while staying compliant on the front.
Ceramic helps with the front-window limit
Here's where Premium Ceramic earns its keep in California: because it rejects heat without needing to be dark, you can run a lighter, legal shade on the front side windows and still get meaningful heat and UV rejection. Carbon gives you the look; Ceramic gives you the performance within the legal limits.
Medical exemptions and reflective film
California does have a medical exemption process for darker front-window tint for certain conditions — it requires proper documentation and isn't a blanket pass. Reflective (mirrored) film is also restricted. If you think you qualify for an exemption, check the current requirements before installing.
Last reviewed
This overview was last reviewed October 2026. Laws change — confirm the current California Vehicle Code requirements before installing any window film.








