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What percent tint should I use on my tail lights?

In most places, you should avoid tinting tail lights. If your jurisdiction permits tinting, aim for a high light transmission—roughly 70% or more—to keep braking and signaling bright. Always verify local laws before applying any tint.


Tail lights are vital safety devices. Dimming or changing their color can reduce visibility to drivers behind you and may violate motor vehicle codes. This article examines typical practices, legal expectations, and safer alternatives for drivers considering tail light tinting as of 2024–2025.


Legal landscape for tail light tinting


Overview of how tail light tinting is treated in different regions and what to expect when checking regulations.


Understanding light transmission and color requirements


Light transmission percentage (VLT) describes how much light passes through a tint film or lens. Lower numbers mean darker tint. Tail lights are typically required to remain red and clearly visible; many jurisdictions restrict tint darkness and color-changing films to preserve brightness and signaling integrity.



  • In many U.S. states, modifying taillights to darken or obscure light output is restricted or prohibited. Violations can lead to fines or failed inspections.

  • Some jurisdictions permit very light decorative films that do not measurably reduce brightness or alter color beyond safe limits.

  • Color requirements are strict: tail lights must emit red light (and must remain red when illuminated); tinted films that shift color or obscure signals may be illegal.

  • Reflectors and rear-lamp performance tests may factor into compliance; installers should ensure tint does not obscure reflectivity or add hazard.


The practical takeaway: always verify your local motor vehicle code or DMV for tail light modification rules before tinting.


Safety and practical considerations


Before applying any tint, weigh safety implications against aesthetics.



  • Lower light output can significantly reduce the visibility of your braking and tail signals from a following distance, increasing the risk of rear-end collisions.

  • Legal penalties vary by jurisdiction and can include fines, inspection failures, and required removal of the tint.

  • Warranty and resale value may be affected, as modifications to lighting are closely scrutinized during inspections.

  • Alternative approaches aim to maintain brightness while achieving a cosmetic change, such as using compliant, high-transparency films or upgrading to brighter, legally compliant tail light assemblies.


Ultimately, prioritize visibility and legality over appearance to keep roads safe for everyone.


How to tint legally and safely (when permitted)


If your jurisdiction allows tail light tinting, follow these steps to stay compliant and safe.



  1. Check local regulations with the DMV or equivalent authority to confirm what is allowed and what tests apply (brightness, color, and reflectivity).

  2. Choose a high-transparency tint or film rated for tail lights, aiming for at least about 70% visible light transmission (VLT) or higher, unless a different standard is prescribed by law.

  3. Have the tint installed by a qualified professional to ensure even coverage, avoid air bubbles, and prevent damage to the lens or seals.

  4. Test the lights in daytime and at night; verify that taillights, brake lights, and turn signals remain clearly visible from the required distances.

  5. Keep documentation, receipts, and any compliance certificates in case of inspections or disputes; ensure you can revert to stock if needed.


For many drivers, a safer route is to leave tail lights clear or opt for compliant upgrades rather than darkening the signals.


Summary


Tail light tinting is a gray area that hinges on local laws and safety considerations. In most places, high-transparency or no tint is recommended to preserve visibility and avoid penalties. If tinting is allowed, aim for the light-transmission levels specified by your jurisdiction (typically high, around 70% or more) and have the work performed by a professional to maintain color, brightness, and compliance.


Always verify the latest regulations with your local DMV or police department before purchasing or applying any tint to tail lights. Ensuring legality and maintaining maximum signal brightness protects you and other road users.

How dark can I tint my tail lights?


Federal law requires tail lights to be red in color and visible from at least 1,000 feet away, and most state laws explicitly prohibit any aftermarket tinting that reduces light output.



Is 20% tint dark or light?


Tint Percentage Chart

Window Tint PercentageVLT
5% (Limo Tint)5%
20% (Dark Tint)20%
35% (Medium Tint)35%
50% (Light Tint)50%



What percent tint should I put on my headlights?


In general, the tinting film applied on the headlights should not reduce the intensity of the light emitted by more than 50%.



Should I tint my taillights?


Headlights and taillights are meant to be visible. Tinting them reduces their effectiveness. Please don't tint your lights.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.