so basically, is the car was PROFESIONALLY retro fitted before 2004, and falls with in the 50% light area then you should be fine, anything after that date and its really not advisable to have any at all.

I had a car years back with limo black all round!! and i must admit, it did look good but christ was it dangerous! In fact most of the time i drove around with the front windows down just so i could see!

theres no way id have tints again, unless factory of course.

In my personal opinion, they are not that cool anymore. It was all the rage back in the 80/90's, but it certaliny not the be all and end all these days.