Im no aerodynamics expert so humour me, lol...

Just wondering (as been out messing with fitting new mirrors, spoiler, etc) why mirrors on cars etc dont fold themselfs back at high speed, ie the wind pushes them back.

I mean, its not hard to do it with bare hands, idve thought the wind would do it just as much, but it dont.

Same as front bumpers, on 3dr's, R32s, etc, the bumpers are pretty flexible, can bend the lower centre section with ease with bare hands, why dont the wind do the same or more when at BIG speeds?

At first i had visions of my fancy mirrors n spoiler getting torn off the car at 180+mph, lol, but if it cant fold back foldable mirrors then it sure wont do that...

But why? Put you hand out the window at big speed n it nearly takes ya fookin arm off!