Well, I debated whether to try this myself but decided I'd rather have a pro work on my new car. Glad I did as the shop did a flawless job in just over 2 hrs. Probably take me 2 wks and plenty of cursing. Anyway, decided to just do an "eyebrow" on the windshield. As for the tint % I will only say that legal in my state is 25% for all windows except the back which is 10%.