California Window Tint Laws
California's 70% front rule is one of the strictest in the country, and CHP writes fix-it tickets for it daily. The move here: a high-performing ceramic 70% film up front that cuts heat without the dark look, then whatever you want behind the B-pillar.
Reviewed July 2026 · Passenger cars (sedans)
Legal tint limits in California
| Glass | Rule for passenger cars |
|---|---|
| Windshield | Top 4 inches only. |
| Front side windows | 70% VLT or lighter |
| Back side windows | Any darkness |
| Rear window | Any darkness |
| Reflectivity | Film may not be more reflective than a standard window. |
| Medical exemption | Available with qualifying documentation |
What VLT means (and how police check it)
VLT — Visible Light Transmission — is the percentage of outside light that makes it through your glass. The number printed in the law is a floor: film may be that bright or brighter. Because factory glass already blocks a little light, an officer's meter reads the combineddarkness of glass plus film. A film sold as "70%" on top of factory glass can meter a few points darker — which is why professional installers measure the final result, not the box label.
Quality matters as much as darkness. Dyed films fade purple and bubble; ceramic films like ULTRASHIELD SHADOW reject heat and up to 99% of UV at any legal darkness, with no signal interference — so you get the comfort without gambling on the number.
California tint FAQ
What is the darkest legal tint in California?+
Can I tint my windshield in California?+
Does California allow medical exemptions for darker tint?+
Is ceramic tint legal in California?+
Are mirrored or reflective films legal in California?+
ULTRASHIELD installers in California
Certified shops that install to your state's exact legal limit and register your warranty with CARFAX.
This page summarizes California statute as published and was last reviewed July 2026. It is not legal advice. Laws change and local enforcement varies — confirm current rules with the California DMV before tinting.
Local answers for California drivers
Other states