When you ask for window tint, the first question you will hear is “what percentage?” The number can be confusing, because a lower number means a darker tint. This guide explains window tint percentages in plain terms, so you can choose the right shade for your car before you visit our window tinting studio in Leander, TX.
What Does the Tint Percentage Mean?
The percentage is the VLT, or Visible Light Transmission. It tells you how much light passes through the window.
- 70% tint lets 70% of light through. It is very light and barely noticeable.
- 5% tint lets only 5% of light through. It is very dark, often called “limo tint.”
So the smaller the number, the darker the window.
One thing many drivers don’t know: most cars already have some tint in the factory glass. When film is added, the final VLT is the glass and the film together, so a 35% film on factory glass can measure a little lower.
The Common Tint Percentages, Side by Side
70% – Almost Clear
Very light, with a clean factory look. Good for drivers who want heat and UV protection without a darker appearance. With a quality ceramic film, even a light shade can block a lot of heat.
50% – Light Tint
A subtle tint that cuts glare and adds some privacy. You can still see clearly inside the car in daylight.
35% – The Popular Middle Ground
One of the most requested shades. It gives a noticeably sleeker look, good privacy in daytime and comfortable visibility at night.
20% – Dark Tint
Much harder to see into the car. A popular choice for rear windows on cars, trucks and SUVs.
5% – Limo Tint
The darkest option. It offers maximum privacy, but it makes the inside of the car very dark and reduces night visibility.
Which Percentage Is Legal in Texas?
In Texas, the front side windows must let at least 25% of light through, so 5% and 20% are too dark for the front doors. Rear side windows and the back glass can be darker if your vehicle has outside mirrors on both sides. The windshield can only have a tint strip above the AS-1 line or the top 5 inches.
For the full breakdown, read our guide on Texas window tint law.
Darker Doesn’t Always Mean Cooler
Many drivers assume a darker tint keeps the car cooler. That isn’t always true. Heat rejection depends mostly on the type of film, not just the darkness:
- A dyed film mainly darkens the glass and blocks less heat.
- A ceramic film can block a large amount of heat, even in a lighter shade.
That’s why a 35% ceramic tint can feel cooler than a 20% dyed tint. If you’re weighing up the cost, our post on ceramic window tint vs regular tint explains the difference.
How to Choose the Right Percentage
Ask yourself three questions:
- Do you mostly want privacy or heat control? Privacy points to a darker rear tint. Heat control points to a quality ceramic film.
- Do you drive a lot at night? A lighter front tint keeps night visibility comfortable.
- Does it need to be Texas legal? The front doors need 25% or lighter.
A popular setup in Central Texas is a legal shade on the front windows with a darker shade on the rear, all in ceramic film.
See the Shades Before You Decide
The easiest way to choose is to see real tint on real cars. At our Leander studio, you can sit in vehicles with different shades and compare them in daylight before you decide. Explore our car window tint services or contact Austin Auto Lab for a free quote.
FAQs
What is the most popular window tint percentage?
35% is one of the most popular choices because it balances looks, privacy and visibility.
Is 20% tint legal in Texas?
Not on the front side windows, which must be 25% or lighter. 20% can be used on rear windows if your vehicle has dual side mirrors.
Does a lower percentage block more heat?
Not always. The film type matters more. Ceramic tint blocks more heat than dyed tint, even in a lighter shade.