I have either 30% or 35% on 5 windows in my celestial blue Mazda3. Sometimes I think I would've liked darker but I'm definitely happy with what I got.
Either way, my car sticks out like a sore thumb and i don't have any problems with cops. I wouldn't worry about it unless you're driving around giving cops a reason to pull you over. Then there's always the chance they could call you out on the tint on top of everything else.
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-Michelle
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