are you sure you aren't mistaken, it doesn't make much sense that the front is aloud to be darker then the back, and i bought my car stock from toyota and there is more then 50% in the back...
edit:
or do you mean 35% tint up front, 75% of light in, and 50% of light in in the back, or 35% tint
edit again:
as seen on VA state police website:
"Except as provided in § 46.2-1053, but notwithstanding the foregoing provisions of this section, no sun-shading or tinting film may be applied or affixed to any window of a motor vehicle unless such motor vehicle is equipped with a mirror on each side of such motor vehicle, so located as to reflect to the driver of the vehicle a view of the highway for at least 200 feet to the rear of such vehicle, and the sun-shading or tinting film is applied or affixed in accordance with the following:
No sun-shading or tinting films may be applied or affixed to the rear side windows or rear window or windows of any motor vehicle operated on the highways of this Commonwealth that reduce the total light transmittance of such window to less than thirty-five percent;
No sun-shading or tinting films may be applied or affixed to the front side windows of any motor vehicle operated on the highways of this Commonwealth that reduce total light transmittance of such window to less than fifty percent;
No sun-shading or tinting films shall be applied or affixed to any window of a motor vehicle that (i) have a reflectance of light exceeding twenty percent or (ii) produce a holographic or prism effect."
