I thought you was alound a 25% tint on the front 2 windows ?
nope..its GOT to let 70% of light in on side windows and 75% on main windscreen...and even "crap" cars have slightly tinted windows these days...so "any" film on it isnt a good idea
moreover if you have an crash at night/hours of darkness insurance companies generally WONT pay out...if you have tints...
added to which police dont like them as it makes it hard for them to see you...esp when they are on "blues and twos" and see that you have acknowldeged that they are coming through a red light for example
clear as mud???