Window tint

I have an automatic day/night mirror. Can I put window tint on the rear window and still have the day night mirror work automatically?

I don’t think you’ll know until you do it. And if it doesn’t work then you’ll probalby won’t need it since it’ll be dark enough anyways.

It will work, but not quite the same as before. The mirror will shift to night mode earlier in the evening than it did previously. This change should work well for you.