I added mud flaps.
 

I got these and had them paint matched last year in and have had them on the last 10mos through winter driving in the NW and even on a long winter road trip.
Paint has held up great, they’ve done their job protect the rockers from rock chips.
I think they look good, they’d probably not look as good on a different color.
All Black helps them blend in a lot!
Had to get these from Germany, wasn’t any in the states.
Install was easy, fitment is great.

Damn, I've got a set sitting in the box...they were the first thing I took off my Alpine White since they stood out so much.

Yeah, I looked at a lot of threads before I got mine. Form over function was reall how I looked at it after my research. That said, I think they turned out well and they blend with black. I really didn’t like the looks so much on the other ones, especially white. Maybe if the whole thing was painted (wheel arch side too) they might look better on other colors, put some 3M on the wheel side of it.
I had mine masked to just the edge with a little natural rubber showing.

Source and part number please

Rears
https://www.turnermotorsport.com/p-1...uine-bmw-part/

Fronts
https://www.turnermotorsport.com/p-1...uine-bmw-part/

Mine shipped from Germany... looks like M5James (post up above the last two) had/has a set maybe message him and see if he wants to sell his.
Good luck.

Do you still have them?