Sun visors, I wish they extended. They allow too much sun around the rear view mirror. My 7-series had the area around mirror darken. I am thinking about getting the upper edge of the windshield tinted.
My other compliant (and it's common) the outside rearview mirrors don't seem to darken at night. I think it's due to the heavy tint on the rear glass. I have positioned my inside rearview mirror all different ways and the outside mirros still don't darken as much as my 7-series. It hasn't been much of a problem since we sit up higher.
11 X3 xDrive35i F25 (CPO), Space Grey/Black Leather, Packages: Premium, Cold Weather, BMW Apps, Sirius and Technology. BMW CCA Member (WindyCity Chapter). Former car: 06 750i E65 (CPO)