Car Window Tint Percentages

VLT stands for Visible Light Transmission. A film rated at 35% VLT allows 35 percent of visible light to pass through it and blocks the other 65 percent. So the lower the number, the darker the film and the less you can see through it — both from outside looking in, and from inside looking out.

One important note: factory glass already has a VLT of its own. Most cars come with side windows around 70–80% VLT from the factory. When a film is "70% VLT," the combined result with your glass will be slightly darker than the glass alone. Reputable installers measure the final combined VLT with a meter to confirm you stay legal.

70% VLT — Nearly Invisible

This is the lightest tint most people consider, and the only shade legal on California front side windows. It looks almost like untinted glass but adds real UV and heat protection — especially in ceramic. If you want maximum heat rejection up front without breaking the law, a 70% ceramic is the answer. Many drivers run 70% on the windshield and front doors, then go darker in back.

50% VLT — Subtle and Safe

A 50% tint cuts glare and heat noticeably while keeping the windows looking light and open. Night visibility is excellent. It is a popular choice for drivers who want comfort and UV protection but do not want a "tinted" look. Legal on every window in California.

35% VLT — The Most Popular Shade

If there is a default, this is it. 35% gives a clean, factory-style darkness — enough privacy that people cannot easily see into the cabin in daylight, while still leaving good outward visibility, including at night. It is the most-requested rear-window shade in Los Angeles and pairs perfectly with a legal 70% up front.

20% VLT — Dark and Private

At 20%, you get strong privacy. From outside in daylight, the cabin is hard to see into. Outward visibility at night drops noticeably, so this shade belongs on the rear windows, not the fronts. It is a favorite for SUVs and for anyone who wants a bolder, blacked-out rear look.

5% VLT — Limo Tint

This is the darkest tint sold — "limo" black. From outside, the glass looks solid. Privacy is total, but seeing out at night is genuinely difficult, which is why 5% is restricted to the rear glass and is never legal on front windows. Use it only if maximum privacy in back is the priority and you are comfortable with reduced night visibility.

This is the single biggest misconception about tint. People assume a darker film keeps the car cooler. It does not — at least not the way they think. Heat rejection comes from the film's technology (dyed, carbon, or ceramic), not its darkness.

So the right way to choose is in two separate steps: first pick the technology (ceramic for LA heat), then pick the shade (how dark you want it to look). For a full breakdown of how the film types differ, see our guide on ceramic tint vs regular film.

California has some of the stricter front-window rules in the country. The limits that matter:

• Front side windows: must be 70% VLT or higher (light tint only).
• Rear side windows: any darkness allowed.
• Rear windshield: any darkness allowed (dual side mirrors required).
• Windshield: tint allowed only on the top 4 inches, or a clear film over the full glass.
• No red, amber, or blue tint colors.

A fix-it ticket for illegal front tint is common in LA. We measure final VLT with a meter on every install so your fronts pass. For the full rulebook including medical exemptions, read our guide to California window tint laws.

Front side windows in California must be 70% VLT or higher. All darker shades are legal on rear windows only.

After thousands of installs, the combination we recommend most often is simple: 70% ceramic on the windshield and front doors, 20% or 35% ceramic on the rears. This keeps your fronts fully legal, gives you strong heat rejection everywhere, and delivers the privacy most people want in the back.

If you drive a lot at night, lean toward 35% in the rear rather than 20% — the visibility difference is real on dark LA streets. If privacy is your top priority and you rarely reverse in the dark, 20% or even 5% on the rear glass is fine. Tesla owners and other EV drivers should pair this with a non-metallic ceramic film to avoid any signal issues — more on that in our Tesla window tint guide.