Window Tint Guide: Compare
How to Choose a Tint Shade for Your Car
Most people choose a tint shade by pointing at a car they like. That is a fine starting point, but the car you admired may be a different vehicle type with different rules, factory glass that is darker or lighter than yours, or an owner who never drives at night.
This guide gives you a better order of operations. Start with what the law allows on your specific vehicle, account for the glass you already have, and only then weigh looks, privacy, night vision and heat. You will end up with a shade you like on day one and still like on a dark, rainy drive home.
The short answer
Choose a tint shade in this order: first, what South Carolina allows on each window of your vehicle type (27% combined on most side and rear windows, with an exception behind the driver on SUVs and other multipurpose vehicles). Second, how dark your factory glass already is. Then balance privacy and looks against night visibility. If heat is your main goal, choose a ceramic film rather than a darker shade.
Key points
- The law sets your limits before taste does, and it depends on vehicle type and which window you are tinting.
- Factory glass already blocks some light, so the film you choose must be lighter than the number you are aiming for.
- Darker shades help privacy and glare but make night driving and backing up harder, especially as eyes age.
- Heat rejection depends more on film type than on darkness, so you rarely need to go darker just to stay cooler.
- Matching the front windows to dark factory privacy glass in the back is usually not possible legally on the front side windows.
Step one
Start With What Your Vehicle Is Allowed
South Carolina's tint statute, S.C. Code Ann. § 56-5-5015, sets the outer limits. Film on the side windows next to the driver, the side windows behind the driver and the rear-most window must be nonreflective, cannot be red, yellow or amber, and must leave a combined light transmission with the factory glass of not less than 27 percent. The windshield may only have film along the top, above the AS-1 line.
Then check your vehicle type. Subsection (I) says the light transmittance requirement applies to windows behind the driver on pickup trucks, but not on other trucks, buses, trailers, mobile homes, multipurpose passenger vehicles and recreational vehicles. Most SUVs and many vans are multipurpose passenger vehicles; if you are unsure how yours is classed, ask before choosing a rear shade. Sedans, coupes and pickups have the 27% limit on every side and rear window.
So before you think about looks, write down which windows are regulated on your vehicle. For many drivers, that means only the front side windows have a limit. For others, every window does.
Statute summary, not legal advice. A medical affidavit exemption exists; ask SCDPS or a lawyer about unusual cases.
Step two
Account for the Glass You Already Have
Film does not go on clear air; it goes on glass that already blocks some light. The two multiply, so a 35% film on glass that passes 80% of light gives about 28% combined, and the same film on glass that passes 75% gives about 26%, which is under the line. That is why the right film for the front windows can differ between two cars that look alike.
Factory privacy glass on the rear windows is a separate case. It is darkened during manufacturing and can already be quite dark on its own. On a multipurpose passenger vehicle there is no light limit behind the driver, so you can add film there for heat or a darker look. On a sedan or pickup with darker factory rear glass, the combined number still has to stay at or above 27%. We check the legal shade for your vehicle before installing.
Step three
Decide What You Want Tint to Do
- Privacy
- Darker shades hide the cabin best. The International Window Film Association notes a 15 percent film looks nearly black from outside. If privacy is the goal, put the darkest legal shade where it matters most, often the rear windows on an SUV.
- Looks
- Many owners want the front windows to look closer to the factory rear glass. On regulated front windows you can narrow the gap but often not close it, because factory privacy glass is commonly darker than a legal front shade. Matching front tint to privacy glass
- Glare
- Darker film cuts more glare. LLumar's published data for its CTX ceramic line shows glare reduction from 37% at the 50 shade up to 94% at the 05 shade. A medium shade handles most sunrise and sunset glare on I-85.
- Heat
- Here darkness is not the main lever. In LLumar's data, its CTX 50 ceramic film rejects more total solar energy than its color-stable dyed ATC 20. Choose ceramic for heat and pick the shade for looks and the law. Is ceramic worth the extra cost?
- UV
- Shade barely matters. LLumar rates its films to block up to 99% of UV rays, light or dark, so even a light film adds UV protection to the side windows.
Step four
Be Honest About Night Driving and Your Eyes
This is the step people skip in a sunny parking lot. A Virginia Transportation Research Council report on window tinting found that tint reduces the ability to see targets that are already hard to see through clear glass, that the effects become increasingly pronounced below 70% transmittance, and that they hit older drivers and people who wear glasses hardest. It found the problems far more likely at night than in daylight.
A separate lab study of drivers looking through the rear window before backing found that detecting a child or road debris got harder as tint darkened, and that backing was compromised for all drivers at the darkest levels tested, particularly older drivers. If you drive unlit rural roads, back out of a dark driveway, or are noticing your night vision change, choose a lighter shade on the rear glass even where the law would allow darker.
Step five
See It Before You Commit
Look at real cars, not just photos
Photos are often edited or taken in shade. Look at cars with a known shade in sunlight and in the evening, ideally from inside as well as out.
Use a simulator for a rough idea
LLumar offers an online tint and paint protection film simulator to preview shades on a vehicle similar to yours. Treat it as a starting point, since screens vary.
Sit in a tinted car at dusk
If a friend has the shade you like, sit in the driver's seat at dusk and check the mirrors and the view over your shoulder. That is where dark tint is felt most.
Ask for the combined number
Before installing, ask what the combined light transmission will be on each regulated window of your car, not just the film's label.
Common picks
Typical Choices by Driver
- Sedan or coupe commuter: a legal shade all around with a ceramic film for heat, since every side and rear window is regulated.
- SUV or minivan family: a legal shade on the front side windows, and on the rear, whatever balances privacy for the kids with your night visibility when backing.
- Pickup owner: the same 27% combined rule behind the driver as on the front, so plan the back glass and any sliding rear window like the front pair.
- Older driver or frequent night driver: a lighter shade, ceramic for heat, and no darker than you need on the rear glass.
- Driver with a medical condition: the statute allows darker film with a physician or optometrist affidavit, kept in the vehicle and updated every two years. Bring the paperwork and ask us before you book.
With us
How We Help You Pick
At The Auto Show we install LLumar Carbon from $125.99 and LLumar Ceramic from $199.99, both priced for the two front side windows, with full-vehicle coverage by quote. We check the legal shade for your vehicle before installing, because factory glass already reduces light, and each tinted window gets the South Carolina certificate of compliance sticker.
One limit to know: we do not tint vehicles more than 8 years old, because door seals and trim become brittle and are likely to break during installation. If your car is newer than that, tell us what you want tint to do and we will help you land on a shade that fits the law and your driving.
Let Us Check the Legal Shade for Your Car
Tell us your vehicle and what you want from tint. We'll check what's allowed on each window and help you choose between LLumar Carbon and LLumar Ceramic.
Common questions
What is the most popular tint shade?
There is no official count, and popularity varies by state because laws differ. In South Carolina, many drivers choose the darkest shade that keeps regulated windows at 27% combined, and some go darker behind the driver on SUVs where the light limit does not apply. Pick for your own vehicle and driving, not for what is common.
Should the front and back windows be the same shade?
Not necessarily. On a sedan or pickup every side and rear window has the same 27% combined limit, so matching is easy. On most SUVs the windows behind the driver are exempt, so many owners go darker in the back for privacy and keep the front legal. Consider night visibility before going very dark on the rear glass.
Does a darker shade keep the car cooler?
Somewhat, but film type matters more. In LLumar's published data, a light ceramic film can reject more total solar energy than a much darker dyed film. If you want a cooler cabin without darker glass, choose ceramic at a legal shade instead of the darkest film you can find.
Can I change my mind about the shade later?
Changing shade means removing the film and adhesive and installing new film, so it is not a small adjustment. That is why it is worth seeing a shade in person, in daylight and at dusk, before you commit. We don't advertise removal of old film, so ask us first if you already have tint you want to change.
Keep reading
Sources
- S.C. Code Ann. § 56-5-5015, South Carolina Legislature (https://www.scstatehouse.gov/code/t56c005.php), accessed October 2026
- LLumar Window Film Performance Data (LL0116NAEN), Eastman Performance Films (https://llumar.com/content/dam/eastman/performance-films/llumar/documents/LL0116NAEN_AutoSpecs_screen.pdf), accessed October 2026
- Automotive Window Film, International Window Film Association (https://iwfa.com/automotive/), accessed October 2026
- Enhance Comfort and Protection with LLumar Automotive Tint, LLumar (https://llumar.com/en/tint/), accessed October 2026
- The Effects of Motor Vehicle Window Tinting on Traffic Safety and Enforcement (VTRC 94-R14), Virginia Transportation Research Council via National Transportation Library (https://rosap.ntl.bts.gov/view/dot/19355), accessed October 2026
- Effects of Reduced Transmittance Film on Automobile Rear Window Visibility, TRID, Transportation Research Board (https://trid.trb.org/View/383453), accessed October 2026
Prices on this page are The Auto Show’s published starting prices. Film ratings and warranty terms come from the manufacturer. This guide explains South Carolina law in plain words; it is not legal advice.