WISCONSIN STATE LAW regarding after market window tint as stated in (Trans 305.32) of this the Wisconsin Statutes as of March 3, 1996 reads as follows: (b) Tinting of the vent and front side windows is permitted as follows:

1.The windows are tinted by the manufacturer of the glazing and are installed as a part of the original manufacturing process.

2.The windows are tinted by the application of tinting film to the inside of the glazing provided that the combination of the glazing and tinting film permits passage through the windows of at least 50 percent of the visible light striking the windows. Tinting film permitted under this subdivision may not be reflective.

3.The windows are tinted, upon the recommendation of a physician or a Christian Science practitioner treating the owner, or an immediate family member of the owner of the vehicle, by the application of tinting film to the inside of the glazing provided that the combination of the glazing and tinting film permits passage through the windows of at least 35 percent of the visible light striking the windows. Tinting films permitted under this subdivision may not be reflective. A written statement from the treating physician or Christian Science practitioner which identifies the patient, the medical condition justifying the recommendation, whether the condition is temporary or permanent and the vehicle to which the recommendation applies, including the make, model, year and vehicle identification number, shall be carried in the vehicle at all times. Tinting film applied under this subparagraph shall be removed when a vehicle covered by the recommendation is sold, when the person for whom a recommendation was made no longer resides in the household of the owner of the vehicle or when the duration of a temporary condition which is the basis for a recommendation has expired.

(5)(a) The rear window may not have any sign, poster or other nontransparent material upon it, other than a certificate or sticker issued by order of a governmental agency.(b)Tinting of rear window is permitted as follows:

1.The window is tinted by the manufacturer of the glazing and is installed as part of the original manufacturing process.

2.The window is tinted by the application of tinting film to the inside of the glazing provided that the combination of the glazing and tinting film permits passage through the window of at least 35 percent of the visible light striking the window. The tinting films permitted under this subdivision may not be reflective.

3.If a rear window does not transmit at least 60 percent of the visible light striking the window, the vehicle shall be equipped with an outside rearview mirror on the left and right side of the driver's compartment.

(6) Tinting of rear side windows is permitted as follows:

1.The windows are tinted by the manufacturer of the glazing and are installed as part of the original manufacturing process.

2.The windows are tinted by the application of tinting film to the inside of the glazing provided that the combination of the glazing and tinting film permits passage through the windows of at least 35 percent of the visible light striking the window. The tinting films permitted under this subdivision may not be reflective.

(7) When measuring total light transmittance under subs. (4)(b), 5(b) and (6), law enforcement officers shall allow a tolerance of 3 percent.

State by State Window Tinting Laws

STATE FRONT SIDES REAR SIDES BACK WINDOW VISOR NET/FILM AL 32% 32% 32% 6" NET AK 70% 40% 40% 5" NET AZ 33% ANY% ANY% AS1 NET AR 25% 25% 10% 5" NET CA 70% ANY% ANY% 4" NET CO* 27% 27% 27% 4" NET CO* NO% ANY% ANY% 4" NET CT 35% 35% ANY% AS1 NET DE 70% ANY% ANY% AS1 NET FL 28% 15% 15% AS1 NET GA 32% 32% 32% 6" NET HI 35% 35% 35% 4" NET ID 35% 20% 35% AS1 FILM IL NO ANY% ANY% 6" NET IN 30% 30% 30% AS1 ? IA 70% ANY% ANY% AS1 NET KS 35% 35% 35% AS1 NET KY 35% 18% 18% AS1 FILM LA 40% 25% 12% AS1 NET MA 35% 35% 35% 6" NET ME 50% 50% 50% 4" FILM MD 35% 35% 35% 5" NET MI ? ANY% ANY% 4" NET MN 50% 50% 50% NO ? MO 35% ANY% ANY% AS1 NET MS 35% 35% 35% AS1 NET MT 35% 20% 20% AS1 FILM NE 35% 20% 20% AS1 OR 5" FILM NV 35% ANY% ANY% AS1 NET NH NO 35% 35% 6" NET NJ NO ANY% ANY% NO NET NM 20% 20% 20% AS1 OR 5" NET NY 70% 70% ANY% 6" NET NC 35% 35% 35% AS1 NET ND 50% ANY% ANY% 70% NET OH 50% ANY% ANY% 70% NET OK 25% 25% 25% AS1 OR 5" NET OR 35% 35% 35% 6" NET PA 70% 70% 70% NO NET RI 70% 70% 70% AS1 NET SC 27% 27% 27% AS1 NET SD 35% 20% 20% AS1 NET TN 35% 35% 35% AS1 NET TX 25% 25% ANY% AS1 OR 5" NET UT 43% ANY% ANY% AS1 NET VT NO ANY% ANY% AS1 NET VA 50% 35% 35% AS1 NET WA 35% 35% 35% 6" FILM WV 35% 35% 35% 5" NET WI 50% 35% 35% AS1 NET WY 28% 28% 28% AS1 OR 5" NET Updated: JuL 26 2004 These laws may not be current and are often enforced differently by different PD's. In all cases, refer to you local authority for enforcement policies, current laws, rules or regulations. Your current state law is the final authority, not this website! The numbers represent the percentage of light transmitted through the tinted glass, so the lower the number, the darker the film allowed. Generally the films are sold as 5%(limo), 20%(dark), 35%(medium), 50%(light). S.U.V.s often have different regulations, which are not listed here.