rockola1971
Full Access Member
I got my numbers swapped around. Factory tint is 20% which means only 20% of the outside light comes in and light smoke is 50%. "Limo Tint" is typically 5%. (I didnt proofread my prior post) I use to be a window tinter back in the early 90s and tinted 100s of vehicles. Hardest one at the time was the rear hatchback of Porsche 944 because of its severe curvature requires many strips overlapped precisely. I remember there was another senior tinter there and he a had a ford thunderbird (1980s) with 50% tint on the whole windshield. It was fairly dark (from the inside) at night.You may have measured weird at your plant, but the rest of the world uses visible light transmission.
Tint is measured by VLT. Factory is around 18%. Light smoke is 50%-70%. 35% just into the range where it's tough to see in. The next state over from me is 70%, which is ridiculous because most sunglasses are 20%-40% and AFAIK there's no law against sunglasses at night. *cue Corey Hart*
http://tintlaws.com/
70% is pretty light. You should be able to see pretty decent at night. My tint guy does a lot of 50% on windshields. His truck has 20%, and he did 5% for a show car before.
Windshield tint is illegal in every state. However some states let you get a doctor's note.
I didnt measure anything at the factory on the glass. I was an instrumentation, calibration and automation electronic technician.