Remove and install the stiffening plate (M4 Coupe)

Removal: 

Release the screws (1) and remove the stiffening plate.

Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Install the stiffening plate and tighten the screws (1).

Tightening torque: 3 Nm 

Courtesy of BMW OF NORTH AMERICA, INC.