Tennessee Window Tint Laws: What Kingsport and Tri-Cities Drivers Need to Know

Tennessee Window Tint Limits at a Glance

Tennessee sets two limits: 35% for every window except the windshield, and 70% for the windshield.

• Windshield. At least 70% of light must pass through, except for the manufacturer's standard shade band at the top.
• Front side windows. At least 35%.
• Back side windows. At least 35%.
• Rear window. At least 35%.

Sedans, SUVs, vans, and trucks follow the same limits. The one difference is factory privacy glass. If federal rules allowed your vehicle model to leave the factory with darker glass on certain windows, the statute exempts those windows. Front door windows are never exempt. For more on larger vehicles, read Why Trucks and SUVs in Kingsport Need Window Tinting More Than Sedans.

What VLT Means and How Police Measure It

VLT, or visible light transmission, is the percentage of visible light that passes through a window. A higher number means lighter tint. A 70% film lets 70% of light through, and a 5% film lets only 5% through.

The number that counts is the reading of the whole window, not the number on the film. Factory glass is not perfectly clear, and many vehicles leave the factory with glass that already blocks some light. If your glass lets about 70% of light through and you add a 35% film, the window will read close to 25%, which is under the legal limit.

Under § 55-9-107, a full-time, salaried police officer who reasonably believes your tint is too dark can stop your vehicle to run a field comparison test. Tennessee's commissioner of safety sets the standard method for that test, and the test checks the window on the vehicle, so glass and film are measured together. As the owner, you carry the burden of proving your windows comply.

Which Tint Percentages Are Legal in Tennessee

Of the six shades we offer, 50% and 70% leave the most room under Tennessee's limits, while 5%, 15% and 20% fall below the 35% limit. Here is how each one fits.

• 5%, 15% and 20%. These are darker than 35% on their own, so they are below the limit on any window of a Tennessee-registered vehicle unless you hold a medical exemption.
• 35%. This matches the paper limit, but combined with factory glass, the window can read below 35%.
• 50%. This leaves more room than a 35% film for the light your factory glass already blocks.
• 70%. This is our lightest shade and the only one that could work on the windshield below the shade band. The combined reading still has to stay at 70% or higher.

Glass varies from vehicle to vehicle, so the finished reading matters more than the film number. We stay up to date on Tennessee tint laws and advise at your appointment to help you choose a package that meets legal standards.

Windshield Tint Rules

Tennessee allows windshield tint only if the windshield still lets at least 70% of light through, with one exception for the manufacturer's standard shade band. That band is the tinted strip some windshields have along the top edge, above the AS-1 line marked near the top of the glass. If you cannot see the AS-1 mark, 5 to 6 inches from the top is a common rule of thumb.

Below the shade band, the 70% limit applies to the windshield as a whole. Windshield glass already blocks some light, so even a light film can bring the reading under 70%. At Ideal Auto Detail, windshield film is available only in GeoShield Apex Ultra.

What Happens If Your Tint Is Too Dark

Tint that is too dark is a Class C misdemeanor in Tennessee, and so is refusing an officer's field comparison test. Under Tennessee's sentencing law, a Class C misdemeanor carries a maximum fine of $50, up to 30 days in jail, or both, and court costs can be added on top of the fine.

An officer who reasonably believes your tint is too dark can stop you and test your windows. If a window reads below the limit, you can be cited, and because the owner carries the burden of proof, your installer's receipt matters. Removing the film or replacing it with a lighter shade brings the vehicle back within the limits.

Tennessee law also makes it unlawful for a professional installer to apply tint that puts a vehicle out of compliance.

Medical Exemptions for Darker Tint

Tennessee allows darker tint for a person with a medical condition that is adversely affected by ultraviolet light, but the exemption comes from the state, not from a tint shop. The process has four steps.

1. Your physician writes a statement certifying that your condition requires darker windows than the standard limits allow.
2. You submit that statement to Tennessee's commissioner of safety at the Department of Safety and Homeland Security.
3. The department's medical review board evaluates the request and recommends whether to grant it and how dark the tint can be.
4. If it is approved, the state issues a certificate or decal showing the approved degree of tint, which you display in your vehicle.

If the request is denied, you can appeal under Tennessee's Uniform Administrative Procedures Act, including in the chancery court of the county where you live. Get the approval before darker film goes on, so you know exactly how dark the state allows.

What Your Installer Must Give You

A professional installer in Tennessee must give you two things: a compliance label on the vehicle and a signed receipt. The law defines a professional installer as anyone who installs tint for profit, barter, wages, or commissions.

The label goes in the lower right corner of the driver's window. It must show the installer's business name and the legend "Complies with Tennessee Code Annotated, § 55-9-107."

The signed receipt must include:

• The date of installation
• Your vehicle's make, model, paint color, and license plate number and state
• The legend "Complies with Tennessee Code Annotated, § 55-9-107, at date of installation"
• The legend "This receipt shall be kept with motor vehicle registration documents"

Keep the receipt with your registration. Since the owner carries the burden of proving compliance, it is your best record if an officer questions your tint.

Tint Rules for Tri-Cities Drivers

The same limits apply across the Tri-Cities because § 55-9-107 is a state law. Whether you drive in Kingsport, Johnson City, or Bristol, Tennessee, or travel between them on I-26 and I-81, a Tennessee-registered vehicle must meet the 35% and 70% limits. Tennessee Highway Patrol troopers and local police officers can both enforce it.

Bristol adds one wrinkle because the city sits on the Tennessee and Virginia line. A vehicle registered in another state is exempt from Tennessee's limits if it meets the rules of the state where it is registered, which covers Virginia and North Carolina drivers who cross into Tennessee.

That exemption follows registration, not where the car was bought or tinted. If you buy a vehicle in another state and register it in Tennessee, it has to meet Tennessee's limits. Johnson City drivers can learn more on our Johnson City auto window tint page.

Legal Tint That Still Beats the Heat

Legal tint can still keep your cabin cooler because much of a film's heat control comes from how it handles infrared heat, not only from how dark it looks. Both films we install are built for infrared heat rejection.

• GeoShield C2 Carbon. A premium carbon film that helps reduce infrared heat, glare and UV exposure, with a color-stable look that will not fade over time. It is a step up in heat rejection without moving to a full ceramic film.
• GeoShield Apex Ultra. A dual-layer nano ceramic film that blocks infrared heat while keeping optical clarity and working well with phone and GPS signals. It is also the film we use for windshields.

Pairing either film with a legal shade gives you heat and UV control without risking a ticket. Once your tint is on, read How to Maintain Window Tinting in Kingsport, TN to keep it in good shape.

Get Legal Window Tint in Kingsport From Ideal Auto Detail

Ideal Auto Detail installs GeoShield window tint at 2559 Fort Henry Drive in Kingsport, and every window tint installation comes with a lifetime warranty. At your appointment, we help you choose a shade and package that meets Tennessee's limits.

Call us at (423) 863-8382. We are open Monday to Friday from 8:00 AM to 5:00 PM, on Saturday by appointment only, and closed on Sunday. A 25% deposit is required for all services, and appointments are handled on a first-come, first-served basis.

See our window tinting packages or request a free estimate.

Tennessee Window Tint FAQ