I think people have been using 30%, but it will be hard to match it perfectly if that's what you're going for. I've also read that it's between 30-35%.
Tint w/o UV protection? That seems kinda odd. I really hope the sunroof has UV protection on it. If not I am gonna get sunburned even with the top closed.
Where the hell did I get 30 or 35% from? I must have been thinking about what I would put all around to get the back dark enough and the front not too dark... I don't know...
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