The soul of the sluggard craves and gets nothing, while the soul of the diligent is richly supplied.
Proverbs 13:4

Stock BMW 2002 sunvisors are notorious for degrading into floppy plastic bags filled with foam dust.
Mine were no different.

Stock visors did not last 40 years!

Stock visors are a wire frame, with sheets of foam taped on and a plastic heat sealed cover applied and they don't fare well 40 years later.

I opted for the easier fix. Replace with a newer version.
1986 528e sunvisors fit. Same length and same mount. 2002 vs E28 visor:

There is a slight difference in the pivot angle that makes the visor sort of angle away from the clip but its close enough to work.

They will mostly stay in the folded up position so it's fine for now.
Solutions would be to add an angled shim, drill a new screw hole or modify the clip itself.

Much nicer to look at 528 Visors