You need a different brace like in the middle of
this picture. When I ordered mine they pointed this out for me. I have photos at the link in my signature. I painted the main panel to match and the insert in black sapphire metallic.
51-19-2-412-410 M Performance Matte Black Bumper Trim - M550iX
51-19-2-412-406 G30 5 Series M Performance Matte Black Diffusor
51-12-8-064-714 Reinforced Panel