Yes, but with limits – you must follow the car window tint laws in Montana to avoid fines. These rules tell you how dark you can go on each window of your car or truck.
Montana has clear rules about window tint. They care about how much light gets through your windows. This is called Visible Light Transmission, or VLT. The rules are not the same for all windows on your vehicle.
It is smart to know these laws before you get your windows done. A ticket for illegal tint can cost you money. It can also be a hassle to have to remove the film.
This guide will walk you through all the details. We will cover the legal limits, how to get an exemption, and what happens if you break the rules.
Understanding Car Window Tint Laws in Montana
Let’s break down the main rules. The car window tint laws in Montana focus on the VLT percentage.
VLT means the amount of visible light that can pass through. A lower VLT number means a darker tint. For example, 5% VLT is very dark, like limo tint.
For sedans, the rules are strict. The front side windows must let in at least 50% of light. So you can only use a 50% VLT tint or lighter on these windows.
The back side windows and the rear window can be darker. There is no specific limit in Montana’s law for these windows on sedans. But you still need to have two side mirrors.
The windshield is mostly off limits. You can only put a non-reflective tint on the top six inches. This is often called the AS-1 line.
For SUVs, vans, and trucks, the rules are different. These vehicles have more leeway for the back windows. The front side window rule of 50% VLT still applies, though.
Reflectivity is another factor. Your tint cannot be too shiny or mirror-like. This is to stop glare from hurting other drivers on the road.
Why Montana Has These Tint Rules
You might wonder why these laws exist. The main reason is safety for everyone on the road.
Police officers need to see inside a car during a traffic stop. Very dark windows can hide what is happening inside. This can be a big risk for an officer’s safety.
Another reason is driver visibility. At night or in bad weather, dark tint can make it hard to see. This can lead to accidents if you can’t spot pedestrians or other cars.
The rules also help with identification. Witnesses might need to see a driver’s face after a hit-and-run. Clear windows help with this kind of thing.
Montana’s car window tint laws in Montana try to balance style and safety. You can still get some shade and UV protection. You just can’t go too dark on the front windows.
These laws are not just to give you a ticket. They are there to help keep the roads safe for all users. That includes you, other drivers, and people walking or biking.
How to Measure Your Window Tint Darkness
Police use a tool called a tint meter. It is a small device they place on your window. It shoots light through and measures how much comes out the other side.
You can buy your own meter online to check your tint. This is a good idea if you buy a used car with tint already on it. You want to make sure it follows the car window tint laws in Montana.
Another way is to ask your tint installer. A good shop will have a meter. They should check the film before they put it on your car.
Remember, the factory glass already has some tint. The tint meter reads the total VLT of the glass plus the added film. So 50% film on 80% glass gives you about 40% total VLT.
This is a key point many people miss. You must meet the legal VLT *after* the film is applied. The law looks at the final result on your car.
Always get the final VLT in writing from your installer. Keep this paper in your glove box. It can help if a police officer questions your tint.
Medical Exemptions for Darker Tint
Some people need darker tint for a health reason. Montana’s car window tint laws in Montana allow for medical exemptions.
You must have a certified letter from a doctor. The doctor must say you have a condition that needs extra sun protection. Conditions can include lupus, melanoma, or light sensitivity.
The letter must be on the doctor’s official letterhead. It should state your name, the medical reason, and how long the exemption is needed. Some are permanent, some are temporary.
You must carry this letter in your vehicle at all times. If you get pulled over, you show it to the officer. It proves you are allowed to have darker tint.
The exemption does not let you go as dark as you want. It typically allows you to go down to 35% VLT on the front side windows. You still cannot tint the entire windshield.
You should also get a sticker from the state. You put this sticker on your driver’s side window, near the bottom. It tells police you have a medical exemption before they even approach.
Applying for the sticker involves sending your doctor’s note to the Montana Department of Justice. They will review it and send you the official sticker if you qualify.
Consequences of Illegal Window Tint
What happens if you break the car window tint laws in Montana? The first thing is usually a ticket.
The fine can be over a hundred dollars. It is considered a non-moving violation. This means it does not add points to your driver’s license.
The officer might also give you a “fix-it” ticket. This means you have a set time to remove the illegal tint. You then have to prove you fixed it, often at the police station.
If you don’t fix it, you can get another ticket. Your car might even fail its next safety inspection. This can stop you from renewing your vehicle registration.
In some cases, an officer can make you remove the tint on the spot. They have the right to do this if they think it’s a major safety issue. This is rare, but it can happen.
Illegal tint can also cause problems during a sale. A buyer might not want a car with illegal tint. They know they will have to deal with the hassle and cost of removal.
It’s just easier to follow the rules from the start. The cost of a ticket and removal is more than doing it right the first time.
Choosing a Reputable Tint Installer
Picking the right shop is very important. A good installer knows the car window tint laws in Montana inside and out.
Ask them straight out, “What is the legal VLT for my car’s front windows?” They should say 50% without hesitating. If they seem unsure, go to another shop.
Look for shops that offer a warranty on their film and their work. Good film should not turn purple or bubble for many years. The warranty shows they trust their product.
Check online reviews. See what other customers say about their service. Look for comments about how long the tint lasted and if it was legal.
A professional shop will have a clean workspace. They should use computer-cut patterns or hand-cut with great skill. This prevents gaps and jagged edges on your windows.
They should also talk to you about film types. There is dyed film, metalized film, ceramic film, and more. Ceramic tint is great for heat rejection without being too dark.
Remember, the cheapest price is not always the best deal. You are paying for skill and knowledge of the car window tint laws in Montana. Good work costs a bit more but saves you headaches later.
Maintaining Your Window Tint
Once you get legal tint, you need to take care of it. Proper care makes it last longer and look better.
Do not roll your windows down for at least 3-5 days after installation. The film needs time to dry and stick to the glass fully. The edges are especially delicate during this time.
Clean your tinted windows with a soft cloth and the right cleaner. Do not use ammonia-based cleaners like Windex. Ammonia can break down the tint film and make it fade or turn purple.
Use a spray cleaner made for tinted windows. You can also use a mix of water and a tiny bit of dish soap. Spray it on the cloth, not directly on the window, to avoid liquid seeping under the edges.
Be gentle around the edges of the film. Do not use sharp tools or abrasive pads to clean. A soft microfiber cloth is your best friend here.
If you see a small bubble right after installation, don’t panic. Tiny water bubbles are normal and should go away as the film dries. Larger bubbles or dirt specs mean you should go back to the installer.
Following these tips keeps your tint in top shape. It also means you won’t have to replace it soon, which saves you money in the long run.
Common Myths About Window Tint Laws
There are a lot of wrong ideas about tint. Let’s clear up some common myths about the car window tint laws in Montana.
Myth 1: “If I bought my car with tint, it must be legal.” This is not true at all. The previous owner might have put on illegal tint. You are responsible for it now.
Myth 2: “Out-of-state tint is okay.” If your car is registered in Montana, Montana’s laws apply. Even if the tint was legal in another state, it must meet Montana’s rules here.
Myth 3: “I only need mirrors if my back window is tinted.” The law says you need two side mirrors if your rear window is tinted. But you should have them anyway for safety.
Myth 4: “Ceramic tint is exempt from VLT laws.” This is false. Ceramic tint is a type of film, not a legal category. It still has a VLT percentage and must follow the same rules.
Myth 5: “Tickets are just a cost of having dark tint.” This is a bad way to think. Multiple tickets add up. And an officer may be less lenient if they see you keep breaking the same law.
Always check the official source for the truth. The Montana State Legislature website has the full text of the law. Don’t just trust what a friend or a forum says.
Frequently Asked Questions
What are the car window tint laws in Montana for SUVs?
For SUVs and vans, the front side windows must allow more than 50% light in. The back side windows and rear window can have any darkness. The windshield can only be tinted on the top six inches.
Can I get a ticket for window tint in Montana?
Yes, you can. If your front side windows are darker than 50% VLT, you are breaking the car window tint laws in Montana. An officer can give you a ticket and tell you to remove it.
How do I get a medical exemption for window tint?
You need a signed letter from your doctor. It must state your medical need for darker tint. You send this to the state to get an official sticker for your window.
Is there a difference between film and factory tint?
Yes. Factory tint is dyed into the glass. Added film is a separate layer. The law looks at the total darkness from both combined when measuring your windows.
Where can I find the official Montana tint law?
You can find it in the Montana Administrative Rules, specifically under Title 23. It is listed as rule 23.3.225 about glazing materials.
Do the car window tint laws in Montana apply to the rear window?
For sedans, there is no specific VLT limit for the rear window. But you must have two side mirrors if it is tinted. For SUVs and trucks, the rear window can be any darkness.
Conclusion
Knowing the car window tint laws in Montana keeps you out of trouble. It is a simple set of rules based on the type of vehicle you drive.
The key number to remember is 50% VLT for your front side windows. Stay at or above this, and you will be fine. For your back windows, you have more freedom, especially in a truck or SUV.
If you need darker tint for health, get the proper paperwork. Carry it with you and display your exemption sticker. This makes things smooth if you get pulled over.
Always use a professional installer who knows the car window tint laws in Montana. They will help you pick a film that looks good,
Tony Kilmer is an auto mechanic and the author behind CarTruckAdvisor.com. He shares practical, no-nonsense guidance on car and truck maintenance, common problems, and repair decisions—helping drivers understand what’s going on and what to do next.
