How dark can your car window tint be?
The darkness of car window tint that is legally allowed varies depending on the country or state you are in. In the United States, auto tint each state has its own laws regulating the amount of tint that is allowed on car windows. The level of tint darkness is usually measured by the percentage of visible: light transmission (VLT) through the window. For example, a 5% VLT tint would only allow 5% of visible light to pass through the window, while a 70% VLT tint would allow 70% of visible light to pass through. In general, the front windshield is usually required to have a higher VLT: percentage than the side and rear windows. In most states, the front windshield must allow at least 70% of visible light to pass through, while the side and rear windows can be tinted darker, typically up to 35% VLT. However, some states may allow darker tints on the rear windows. It is important to check with your local law enforcement: agency or department of mot...