How dark can window tint be in Wisconsin?
Wisconsin Road Rules · Barron, WI
How dark can window tint be in Wisconsin?
Reviewed by Cory Gunderson, Internet Sales & Finance Manager · Last checked October 27, 2026
Short answer
For aftermarket film, the front side and vent windows must let at least 50% of visible light through (glass and film combined), and the rear side and rear windows at least 35%. Reflective film isn't allowed. Factory-tinted glass installed by the manufacturer is permitted.
The details
These limits are in Wisconsin Administrative Code Trans 305.32:
- Front side and vent windows: at least 50% light transmission with film, non-reflective.
- Medical exception: with a physician's written statement carried in the vehicle, front side windows can go to 35%.
- Rear side windows and rear window: at least 35% with film, non-reflective.
- Mirrors: if the rear window lets through less than 60% of light, the vehicle needs outside mirrors on both the left and right sides.
- No signs, posters or other non-transparent material on the front side windows, except government-issued stickers.
Many trucks and SUVs come with darker factory privacy glass behind the driver. That's manufacturer glass, so the film limits don't apply to it.
Questions? Talk to a real person in Barron.
Call or message us and we'll give you a straight answer, or point you to the right office if it's not ours to answer.
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- Swant Graber Detail Center
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- Ask Swant Graber: car-buying questions
3 brands. 2 rooftops. 1 Swant Graber.
Chevrolet, Dodge, Ram, and Ford on one Highway 8 campus in Barron, with Swant Graber roots here since 1959. Swant Graber Motors and Swant Graber Ford sit directly across Highway 8 from each other.
Swant Graber Motors
Chevrolet · Dodge · Ram
1690 E Division Ave (Highway 8)Barron, WI 54812
Phone
715-537-5657Sales: Mon–Fri 8:00 a.m.–5:30 p.m., Sat 8:00 a.m.–3:00 p.m. · Service: Mon–Fri 8:00 a.m.–5:00 p.m.
Swant Graber Ford
Ford · across Highway 8
1697 E Division Ave (Highway 8)Barron, WI 54812
Phone
715-537-9500Sales: Mon–Fri 8:00 a.m.–5:30 p.m., Sat 8:00 a.m.–3:00 p.m. · Service: Mon–Fri 8:00 a.m.–5:00 p.m.
Questions
Is 35% tint legal on front windows in Wisconsin?
Only with a physician's written recommendation. Otherwise, front side windows must let at least 50% of light through.
Is factory privacy glass legal in Wisconsin?
Yes. Trans 305.32 permits windows tinted by the glazing manufacturer as part of the original manufacturing process.
Can window film be reflective in Wisconsin?
No. Trans 305.32 says permitted tint films may not be reflective.
Book a detail in Barron
Call either store to set up a detail or the Appearance Package. Detail shop hours match sales hours: Monday to Friday 8 a.m. to 5:30 p.m., Saturday 8 a.m. to 3 p.m.
Swant Graber Motors (Chevrolet, Ram, Dodge)
1690 E Division Ave, Barron, WI 54812
715-537-5657
Swant Graber Ford
1697 E Division Ave, Barron, WI 54812
715-537-9500
Sources
- Wis. Admin. Code Trans 305.32: Vent, side and rear windows: docs.legis.wisconsin.gov