[Fliz]

My 2018 BS driver's side window often squeaks when the window closes against the closed top, just when it meets the top. I'm assuming it's the rubber seal and window meeting that's causing it. It doesn't happen always, but it happens a lot. Tends to happen almost every time when opening and closing the door.

Anybody else run into this and did you do anything to fix it?

 

[DriveInHouston]

Nothing some silicone lubricant won't fix. As a plus, the seal will not freeze attached to the glass if you ever are in serious subfreezing temperatures...

 

[GregW]

A bit of talcum powder on the rubber seal should tell you if it's that (squeak will stop!) You can then decide if you want go permanent 'cause the talc is temporary.
Silicone is OK, Krytox (expensive!) is what the car companies use to stop dashboard squeaks.

 

[Fliz]

Good suggestions, thanks folks! Note - I have also asked my dealer's service department in an email. If they get back to me with any other interesting info I'll update the thread.