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View Full Version : Coupe rear windows.


DoubleTrouble
08-09-2021, 04:48 PM
My first coupe. Any particular problem with the windows operating? Longevity? Feels like something that needs tender loving care or keep closed?
John in VA
08-09-2021, 04:55 PM
No trouble with mine - I open them to exhaust heat this time of year, but usually have them closed.
cakM3
08-09-2021, 05:41 PM
No trouble with mine - I open them to exhaust heat this time of year, but usually have them closed.

+1

I do the same thing with my M3 whenever I take it to work on hot sunny days and leave the rear window slightly open to exhaust the heat out of the car... no issues here either. :thumbsup
DoubleTrouble
08-09-2021, 05:43 PM
I told my son who is driving it to use the sunroof for that exact purpose, heat index was 109 today. But if windows work perfectly, will use them, too.
John in VA
08-09-2021, 06:07 PM
I think too much open sunroof contributes to the headliner material coming loose, but that's just a theory. Mine is usually in the vent position when I'm moving.
t.er
08-09-2021, 06:12 PM
Haha I rarely open both those, and my sunroof. I've done it once or twice when I got my car since it was cool, but I honestly can't remember the last time I opened them lol.

Objectively I would think these are more reliable than the front windows - all you have is a little arm that goes in and out, versus a motor with cables, pulleys, so many more moving parts.
cakM3
08-09-2021, 07:37 PM
If it's going to be a hot sunny day and I take my M3 to work, I will crack open the sun roof and leave the sunroof cover in place and then crack open my rear side windows so hot air inside the car has a way to vent out... that is the only time I use my sunroof...
DoubleTrouble
08-09-2021, 07:48 PM
If it's going to be a hot sunny day and I take my M3 to work, I will crack open the sun roof and leave the sunroof cover in place and then crack open my rear side windows so hot air inside the car has a way to vent out... that is the only time I use my sunroof...
Yeah, probably 140 degrees inside car today.
sillieidiot
08-10-2021, 03:16 AM
I only didn't use them cause it breaks the rubber seal around the windows trim more. But it's easy enough to do that DIY to replace it, so I do open it a bit to vent when parking. I don't have a sunroof anymore. I would use that over the rear windows when I did.
GeorgeH
08-12-2021, 05:36 AM
I modified the switch to one-touch open and I used them all the time, if the car was parked they were likely open.