The laws for NYS are:
6 inch strip down from the center of the windshield.
Driver/passenger fronts 70% visible light transmission (VLT)
Driver passenger rears and rear window can be completely blacked out(spray painted) if you have sideview mirrors.
My friends father is a NYS Trooper so I know the laws from him and other Law Enforcement Officals.
The 70% VLT really isn't much darker than stock. I lived in Binghamton, and in Buffalo and I have always had 20% all around with a 5% visor strip. I have been pulled over many times for speeding and the cops never said anything about the tint. I was only pulled over for tint once and he let me go. I just was polite and told him I did not know they were too dark since the car was purchased that way.
Any tint shop in your area can tint them legal for you. My advice is to look for several features of the shop/tint.
For the shop: make sure they do a one piece rear window, when it is in pieces it looks like crap.
I perfer no cutout for the rear brake light, it looks better and the light is mounted so close to the glass it shines through no problem.
For the tint: make sure it is a lifetime warrantee against peeling, fading, and bubbling.
Llumar is a brand I have experience with.
Remember that all the different VLT %'s reflect almost the same amount of heat and block almost the same amount of UVA/UVB. The darkness is more about looks/privacy.
Sorry if that is more than you wanted to know.
