I have had tint on my front windshields for years. I will give you my feedback. Anything more than 70% will impair your vision. I have had 50% before and it was OK in town with street lights at night. At night in rural areas it would majorly decrease your vision. In heavy rain storms it will impair your vision. 70% Ceramic is the only thing I will use. The reason for it in the south is heat reduction. I also run a 5% legal strip at the top because I drive into work with the sun in my face in the morning.
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