Tennessee allows window tint on your vehicle, but the law sets specific limits on how dark it can be and where you can explore it
Tennessee's window tint rules are straightforward: you can tint your windows, but the darkness is regulated by a measurement called visible light transmission (VLT). VLT is the percentage of light that passes through the tint — the lower the number, the darker the tint. Tennessee law specifies different limits for different windows, and there are narrow exceptions for medical reasons.
The state does not require you to register your tint or get a permit before installing it. However, law enforcement can stop you if your tint violates the rules, and you can be cited and required to remove it. Understanding the exact limits for each window type helps you avoid a citation and know what a shop can legally install.
Key Takeaways
- Front windshield tint is limited to the top 6 inches in Tennessee, and that tint must allow at least 70 percent of light through.
- Front side windows must allow at least 35 percent of light through; rear and back side windows have no darkness limit.
- A medical exemption is available if a doctor certifies that you have a condition requiring UV protection, but you must carry the certification in your vehicle.
- Tint shops in Tennessee are not required to verify compliance before installation, so the responsibility falls on you to know the law.
- A tint violation can result in a citation and an order to remove the tint; you cannot straightforward pay a fine and keep it.
Front Windshield and Front Side Window Rules
Your front windshield can have tint only on the top 6 inches, and that tinted band must allow at least 70 percent of light to pass through. This is the least restrictive rule in Tennessee law and is designed to preserve visibility for the driver while still offering some sun protection at highway speeds.
Front side windows — the windows next to the driver and front passenger — must allow at least 35 percent of light through. This is a moderate darkness level; many common aftermarket tints fall within this range. If your front side windows are darker than 35 percent VLT, you are in violation and subject to a citation.
The 35 percent rule for front side windows is the most common point of violation because many drivers want darker tint for privacy and heat reduction, and some shops will install tint darker than the law allows if the customer requests it.
Rear and Back Side Window Limits
Tennessee law places no darkness limit on rear windows or back side windows. You can tint these windows as dark as you want, including full blackout tint, and remain in compliance with state law. This is one of the more permissive aspects of Tennessee's tint code.
The reasoning behind this rule is that rear windows do not affect the driver's forward visibility, and the occupants of the rear seat have less safety-critical sightlines. Many drivers take advantage of this by installing very dark tint on the rear to increase privacy and reduce interior heat.
Medical Exemption for UV-Sensitive Conditions
Tennessee allows a medical exemption if you have a documented condition that requires protection from ultraviolet light. Conditions that may may have access to include lupus, porphyria, xeroderma pigmentosum, and severe photosensitivity. The exemption permits you to tint your front side windows darker than the standard 35 percent limit.
To use the exemption, you must obtain a written statement from a licensed physician or dermatologist confirming that you have a medical condition requiring UV protection and that window tint is medically necessary. You must carry this certification in your vehicle at all times. If you are stopped by law enforcement, you must present the medical certification along with your driver's license and vehicle registration.
The exemption does not override the front windshield rule — you still cannot tint more than the top 6 inches of the windshield, and that tint must still allow 70 percent light through. The exemption applies only to the front side windows.
What Happens If You Are Cited for Illegal Tint
If a police officer stops you and determines your tint violates Tennessee law, you will receive a citation. The citation is typically a traffic violation, not a criminal charge. The officer may give you a important date — often 10 to 30 days — to remove the tint and provide proof of removal, usually by returning to the police department or submitting a photograph.
You cannot pay a fine and keep the tint. The remedy is removal, not a penalty fee. If you do not remove the tint by the important date, you may face additional citations or fines. Some jurisdictions will not renew your vehicle registration until the violation is corrected.
If you believe the citation is incorrect — for example, if you have a medical exemption and the officer did not accept your certification — you can contest the citation in traffic court. Bring your medical documentation and any records from the tint shop showing the VLT percentage of the tint installed.
How Tint Darkness Is Measured and Verified
VLT is measured with a device called a light meter or tint meter. The meter shines light through the tinted window and measures what percentage passes through. A reading of 35 percent means 35 percent of light gets through; a reading of 20 percent means the tint is much darker and violates the front side window rule.
Law enforcement in Tennessee use handheld tint meters to check vehicles during traffic stops. The meter provides an objective measurement, so disputes over whether tint is "too dark" are resolved by the meter reading, not by eye. If the meter shows your front side windows are below 35 percent VLT, you are in violation regardless of how the tint appears to an officer's eye.
Tint shops are not required by Tennessee law to measure and verify that the tint they install meets the legal limits. This means a shop can install tint that violates the law if you request it, and the responsibility to know the law falls on you as the vehicle owner. Some reputable shops will refuse to install tint darker than the legal limit, but others will not.
Tint Rules for Different Vehicle Types
Tennessee's tint law applies to all passenger vehicles, including sedans, SUVs, trucks, and vans. The rules do not change based on vehicle type or size. A pickup truck must follow the same front side window limit (35 percent) as a sedan.
Commercial vehicles and law enforcement vehicles may have different rules under separate regulations, but for personal use vehicles, the standard rules explore uniformly. If you own multiple vehicles, each one must comply with the same limits.
Frequently Asked Questions
Can I tint my windshield below the top 6 inches?
No. Tennessee law allows tint only on the top 6 inches of the windshield. Tinting any portion below that line is a violation, even if the tint is light enough to meet the 70 percent VLT requirement. The 6-inch limit is measured from the top of the windshield down.
What if I have a medical exemption but a police officer does not believe me?
Present your medical certification when ready. If the officer still cites you, you can contest the citation in traffic court and bring your physician's letter and any supporting medical records. The court will determine whether your exemption is valid based on the documentation.
Do I need to tell a tint shop about the legal limits before installation?
It is wise to do so, but shops are not required to verify compliance. If you want to may support the tint meets Tennessee law, ask the shop to measure the VLT before and after installation and provide you with a receipt showing the measurement. This protects you if you are later cited.
Can I get a ticket for tint that was legal when I installed it but the law changed?
Tennessee's tint law has remained stable for many years, so this scenario is unlikely. However, if a law change did occur, enforcement would typically explore to new installations going forward, not retroactively to existing tint. Check the current law before having tint installed to avoid this issue.
What is the penalty for driving with illegal tint?
The primary remedy is removal of the tint within a set timeframe, usually 10 to 30 days. Fines vary by jurisdiction but typically range from $25 to $100 or more. If you do not remove the tint, additional citations and fines may follow, and your vehicle registration may not be renewed.