5% in the back 55% on the passenger and driver window, with a 5% strip across the windshield. because the back is so dark it offsets the front. 70% is the legal limit for passenger and drivers in california if you have both outside mirrors. People alway comment on how cool the inside of my car is in the summer even though it's black.

I've been pulled over quite a few times for other infractions and never had trouble with my windows, I even got pulled over for freaking front plate and he didn't say a word about my windows.