Why is this thread aimed at PP2? A mud flap is there to protect the fender which it will do regardless of tire width. I would find it hard to believe the tire would throw a curve ball (rock?) into the fender.
^Mine doesn't work either (2018). It warns but does not brake. I'm not going to the dealer for this- I do just fine braking on my own. And, I indicated that a plate in the center wouldn't matter- sensor is behind the cover on the driver's side...
Dredging this one back up because I found a product that covers-up those "white marks". Sharpie doesn't work worth a damn. I had some of this leather dye in the garage and dabbed some on waited a few seconds and wiped away excess. Perfecto results!