WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.
Mark separating cut (1) according to dimension (a) and make the cut.
Dimension (a) = 25 mm
Be aware that the new part is installed overlapping in the area of the separating cut.
Loosen the welded connections in the areas (2) and remove the luggage compartment floor.