Hello.
How do I remove the small pieces located on the rear (and front) wheel arches? I'm referring to the rubber strips along the bottom edge of the doors that extend into the fenders.
Do you mean the trim pieces that are on the sides of the door? To access them, you need to remove the front fender liners, then reach in from the back. The trim is held in place by a nut from the rear. The clips are located on the back side.
If you're referring to the very bottom trim pieces: these are secured with a clip from the wheel arch. Simply pull them out, and then you can unclip the trim piece.