lol i think the legal limits are a joke, yet i see reasons as to why they are set that way, here in maryland it is 35% legal limit, you can probably get away with 20% and never be hasseled by cops, and ive got 5% all around with a strip on the windshield, i like it alot, and my truck already had 20%in the rear from the fact. , and its a real PIA trying to look out at night with that combo, other than that i love it, you get used to driving around with it, and yes backup lights are a big help. the best part is no one can see in the truck unless looking very hard up close.
wes