This thread is to address why front doors sound so flimsy
when the window is rolled down.l
am referencing when the door is closed with window down.
With the windows rolled up, it's a solid feeling door.
Why is when the window down it rattles so much?

I have replaced both doors with the upgraded slider rails.
Also, replaced the black window holder thing.

Door sounds cheap with window down, why is that?

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2003 4.6is X5
2003 525it
2003 E53 X5 Standard shift