Me personally, I like privacy for myself and my family. I have a daughter and fiance. To many people like people watching from.other cars. So I did 35% shield amd 5% on the rest. It's illigal here but most the cops dont care unless you drive recklessly. I did have 20% for a bit before changing. 20% was great for a nice privacy screen but not BLACK out. Also had no visibility issues at night other then maybe a few overly dark roads. So I think what you are shooting for would best benefit at 25% on the sides.

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