yes the oem wing willl leave shit ton of betalink which all needs to be rubbed off with your fingers along with 3m adhesive remover or the like. (Zoom in on the 2nd photo)
https://f90.bimmerpost.com/forums/sh....php?t=1568784
you're better off with a bodyshop in event there are surface scratches in the clear so they can clean it up before mounting the new one. Dealership may not be able to do this or want to do this from liability standpoint especially since that oem part was installed at port.
The new pro wing is surely worth it in my opinion
