I echo everything Redd said in their very comprehensive comments! I was lucky to buy my F82 with ~ 8000 miles about 3.5 years ago and the original owner had a very professional PPF job done on the doors / roof forward. I’m now at ~ 48,000 miles and the car still looks almost brand new. I’ve done 5 long road trips, Austin - California, and not a single rock chip. At the very least, I would say front bumper, hood, front quarter panels + roof.
This thread shows the perils of a bad PPF job
https://f80.bimmerpost.com/forums/sh....php?t=1978197