I was curious if anyone has used the 3M Crystalline tint on their cars. More specially, the CR90 or CR70. I want to know how, if any, did it affect the rain sensory or auto-dimming feature of the rearview mirror?

 

It should have nothing to do with your rain sensor even if you tint your windshield as the rain sensor is mounted on the top of the windshield and a tint installer would need to be completely inept to pull it off and put tint over the gel pack. As for the auto dimming mirror, tint doesn't really mess with it at all. Darker tint will make it come on less due to less light coming through the rear window though.

People mainly use Crystalline if they don't want a darker tint but want heat rejection. Any reason why you just don't want to use a quality ceramic tint (e.g. FormulaOne Pinnacle)? I would like to assume you plan on using it on your front windows at least because of CA's tint laws.

 

I just don't care for dark tint. I like the idea of UV protection and heat reduction with near clear windows.