I had a mobile glass repair dispatcher say that they installed the comfort glass for me as well.. after work I went out in the parking lot and it looked like a plain glass windshield. Pretty sure the comfort glass had a hue to it, especially if your wearing polarized sunglasses. I think it was just a way for them to get a couple extra bucks.. I paid 400 (knew it sounded too good to be true), comparable companies charge $230 for the plain aftermarket glass.

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2000 E53 4.4
2011 E70 35d