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Understanding window tint laws matters before you tint your vehicle windows. Illinois and Missouri have specific regulations regarding window tint darkness, visible light transmission (VLT), and windshield tinting. These requirements help maintain road safety while allowing drivers to enjoy the benefits of window tinting.

At Suds Detailing, we want drivers to make informed decisions when choosing window tint for their vehicles. Below is an overview of Illinois and Missouri window tint laws, including legal tint limits and medical exemptions, to help you understand the requirements before scheduling your window tinting service.

Illinois window tint regulations depend on the amount of light transmitted through the vehicle's windows, particularly the windows behind the driver's seat. The legal requirements for front side window tint vary depending on the light transmission of the rear windows and whether the vehicle has factory-installed tinted glass.

For vehicles where the windows behind the driver's seat meet the applicable light-transmission requirements, non-reflective tint may be applied to the front side windows. Depending on the rear-window configuration, the front side windows must allow at least 35% or 50% of visible light to pass through.

Non-reflective tint is permitted along the uppermost portion of the windshield, provided it does not extend more than 6 inches down from the top.

Illinois also allows certain medical exemptions for individuals with qualifying medical conditions who require protection from direct sunlight. These exemptions require appropriate medical certification and state documentation.

Windshield

• Non-reflective tint is permitted along the uppermost 6 inches of the windshield.

Front Side Windows

• Minimum 50% VLT when the windows behind the driver's seat allow at least 30% light transmission.
• Minimum 35% VLT when the windows behind the driver's seat allow at least 35% light transmission.
• Minimum 50% VLT when the vehicle has qualifying factory-installed tinted glass behind the driver's seat.
• A 5% measurement variance is provided under the applicable statutory provisions.

Rear Side Windows and Rear Window

• Window tinting and certain decorative window applications are permitted under applicable conditions.
• Vehicles with qualifying rear window treatments must have side mirrors on both sides.

Medical Exemptions

• Available for qualifying medical conditions requiring protection from direct sunlight.
• A physician's certification and the required Illinois Secretary of State documentation must be obtained.

Missouri allows vehicle window tinting with specific restrictions on the windshield and front side windows. Front side windows must allow more than 35% of visible light to pass through, with a statutory measurement tolerance.

Rear side windows and the rear window may generally be tinted to any darkness level. Non-reflective tint is permitted along the upper portion of the windshield, above the manufacturer's AS-1 line or within the top 5 inches.

Missouri also regulates reflective and mirrored window tint. Certain colors, including red, yellow, and amber, are prohibited. Drivers with qualifying medical conditions may apply for a medical exemption permit that allows darker tint on the front side windows.

Vehicle owners should ensure their window tint complies with Missouri regulations to avoid inspection issues or potential penalties.

Windshield

• Non-reflective tint is permitted above the manufacturer's AS-1 line or within the top 5 inches.

Front Side Windows

• Must allow more than 35% of visible light to pass through.
• A statutory measurement tolerance applies.

Rear Side Windows

• Any darkness level is generally permitted.

Rear Window

• Any darkness level is generally permitted.

Reflective Tint

• Reflective or mirrored tint is restricted.
• Red, yellow, and amber tinting materials are prohibited.

Medical Exemptions

• Available for qualifying medical conditions requiring protection from sunlight.
• A physician's statement and an approved Missouri medical exemption permit are required.

Window tint laws and regulations may change. The information provided on this page is intended for general informational purposes only and should not be considered legal advice. Actual requirements may vary depending on vehicle specifications, factory-installed glass, and applicable state regulations.

Vehicle owners should verify current requirements with the appropriate state authorities before installing window tint.

Choosing the right window tint involves more than appearance. It is important to select a window film that meets your needs while considering the applicable tint regulations in Illinois and Missouri. At Suds Detailing, we take pride in providing professional window tinting services with quality materials, careful installation, and personalized customer care.

With more than 10 years of experience, our family-owned and -operated business is committed to helping customers find the right window film for their vehicles.

• Lifetime warranty on all window tinting services
• Customer satisfaction guaranteed
• Premium carbon and ceramic window film options
• Licensed and insured technicians
• Honest pricing and clear communication
• Friendly, personalized customer service

Whether you're looking for improved privacy, reduced heat, or added UV protection, our team is committed to delivering quality workmanship and helping you understand the window tint options available for your vehicle.

Looking for professional window tinting in Illinois or Missouri? Suds Detailing is here to help you explore your options and choose a window film that suits your preferences and vehicle.

Our team can answer your questions about carbon and ceramic window tint, discuss available film options, and help you understand the importance of complying with your state's window tint regulations before installation.

Serving St. Clair County, IL, and surrounding areas, we provide personalized service, quality workmanship, and a lifetime warranty on window tinting services.

Ready to upgrade your vehicle's comfort, privacy, and appearance? Contact us today to discuss your window tinting needs and schedule your installation.