35d, E70, MY2011, June 2010 build, odometer ~142,000 miles.
Without any warning, but the night did get unusually cold, both sides dropped - driver side a bit more than the passenger side.
There were no warning signs or fault codes . . . would have guessed some level control malfunction...
The headliner on the rear cabin of my 2001 740IL suddenly sagged for no identifiable reason. I've heard about how the front portions can separate because of missing body plugs funneling air through the A pillars, but I can't figure out why it would happen in the back. Any insights?