Quote:
Originally Posted by JustinGTP
how can you tell when it's tinted? youre probably seeing the uv protection that is built in that is the circles all over the window when looking through polarized lenses....
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As far as I know, it's not UV, but IR protection. It potentially stops upto 95% of heat entering through the glass. It consists of a silver oxide layer to reflect the IR, plus other coatings to protect the silver oxide.
On some cars it does produce a purple tint, but the BMW version doesn't; it might make the screen very slightly darker compared to the side windows.
BMW call it a Climate Comfort Screen, IIRC. I believe 6s and 7s can have it fitted all round, something I would have willingly paid for - I have it on my E92's screen, and it makes a big difference.