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Window Tint Rules for South Carolina Drivers

By Viola Travers · Practical Services & Civic Guide

What South Carolina allows on car windows

South Carolina law sets limits on how dark your window tint can be, measured as a percentage of light that passes through the glass. The rules differ by window location and by vehicle type. If your tint is darker than the law allows, you can be stopped and cited, and you may be ordered to remove it.

For sedans and most passenger vehicles, your front side windows must allow at least 27 percent of light through. Your rear side windows and rear window can be any darkness. Your windshield can have tint only on the top 6 inches, and that tint must be non-reflective.

For SUVs and vans with an aftermarket rear window (one you added yourself, not the factory glass), the same 27 percent rule applies to front side windows. Rear windows on these vehicles can be tinted to any darkness.

Key Takeaways

  • Front side windows on sedans must let through at least 27 percent of light; rear windows have no darkness limit.
  • Windshield tint is allowed only on the top 6 inches and must not be reflective.
  • SUVs and vans follow the same front-window rule but have more freedom with rear windows.
  • A police officer can measure your tint with a device called a light meter and issue a citation if it is too dark.
  • You can have medical tint darker than the law normally allows if you have a signed doctor's note and a medical exemption certificate from the South Carolina Department of Motor Vehicles.

How tint darkness is measured

Tint darkness is measured as visible light transmission (VLT), the percentage of light that passes through the glass. A 27 percent VLT means 27 percent of light gets through and 73 percent is blocked. The darker the tint, the lower the VLT number.

Law enforcement uses a handheld light meter to test your windows at the roadside. If the reading shows your tint is darker than the law allows, the officer can write you a citation. You do not have to consent to the test, but refusing does not prevent a citation if the officer believes the tint violates the law based on what they can see.

When you buy tint film or have it installed, the shop should tell you the VLT rating. If you are unsure whether your current tint is legal, a tint shop can measure it for you before you drive.

Medical exemptions for darker tint

If you have a medical condition that makes you sensitive to sunlight—such as lupus, photosensitivity, or certain eye disorders—you may be able to use tint darker than the law normally allows. You will need a signed letter from a licensed physician stating that you have a medical condition requiring darker tint.

Take that letter to your local South Carolina Department of Motor Vehicles office and request a medical exemption certificate. The DMV will issue the certificate, which you must keep in your vehicle at all times. If you are stopped by police, show them the certificate along with your driver's license and vehicle registration.

The certificate does not give you unlimited tint darkness. The DMV will specify how dark your tint can be based on your doctor's recommendation. You still cannot tint your windshield beyond the top 6 inches, and that tint must remain non-reflective.

Penalties for illegal tint

A first citation for illegal window tint in South Carolina is a non-moving violation, typically resulting in a fine. The exact amount varies by county, but fines generally range from $100 to $200. You will be ordered to remove or lighten the tint within a set timeframe, usually 10 to 30 days.

If you receive a second citation for the same violation within a certain period, the fine may increase. Some counties treat repeated tint violations more seriously than others. You may also be required to have the tint inspected by law enforcement or a DMV official to confirm it has been corrected.

Failure to remove illegal tint after being cited can result in additional fines or other penalties. The best approach is to have tint removed or adjusted as soon as you receive a citation.

Removing or adjusting tint

If your tint is too dark, you have two options: remove it entirely or have it lightened to meet the legal limit. Removal is usually cheaper and faster. A tint shop can remove the film using heat and scraping tools, though the process can take one to three hours depending on how many windows are tinted.

If you want to keep some tint, a shop can install lighter film that meets the 27 percent VLT requirement for front side windows. This costs more than removal but gives you some sun protection and privacy while staying within the law. Ask the shop to provide documentation of the new VLT rating so you have proof of compliance if stopped.

Some older tint may have been applied as a factory coating rather than film. Factory tint is usually legal, but if you are unsure, a tint shop can measure it and tell you whether it meets South Carolina's standards.

Reflective tint and other restrictions

South Carolina law bans reflective or mirrored tint on any window except the rear window. Reflective tint bounces light back rather than absorbing it, and it can interfere with other drivers' vision and with law enforcement's ability to see into your vehicle. If your tint has a shiny or mirror-like appearance, it is illegal regardless of how dark it is.

Aftermarket window covers, shades, or sunscreens that block the windshield or side windows are also prohibited while driving. You can use them while parked, but they must be removed before you operate the vehicle.

Tinted windows on commercial vehicles and law enforcement vehicles are subject to different rules. If you operate a commercial vehicle in South Carolina, check with your company or the DMV about what tint is permitted.

Frequently Asked Questions

Can I have different tint darkness on different windows?

Yes. Your front side windows must be at least 27 percent VLT, but your rear side windows and rear window can be any darkness. Your windshield can only have tint on the top 6 inches. Many drivers use this to their advantage, keeping front windows lighter and rear windows darker.

Do I need to tell my insurance company about window tint?

Most insurance companies do not require notification of legal window tint. However, if you have a medical exemption, it is a good idea to keep a copy of your exemption certificate in your vehicle and to inform your insurer if you are involved in an accident, since the tint may affect visibility claims.

What if I bought a used car with illegal tint already on it?

You are responsible for the tint on your vehicle once you own it. If you are cited, you cannot use the fact that the tint was already there as a defense. Remove or lighten the tint as soon as possible to avoid fines.

Can I tint my windshield below the top 6 inches?

No. South Carolina law allows tint only on the top 6 inches of the windshield, and that tint must be non-reflective. Tinting any other part of the windshield is illegal and can result in a citation.

How do I know what VLT percentage my current tint is?

The best way is to take your vehicle to a tint shop and ask them to measure it with a light meter. Many shops will do this for free. If you have the original paperwork from when the tint was installed, it may list the VLT rating.