Removing and installing/replacing all roof shells (M4 Convertible)

Only ever replace roof shells individually in succession.

After replacing each individual roof shell, always adjust this shell completely and check the retractable hardtop for leaks.

This is the only way of ensuring that no incorrect adjustments are carried over to the next roof shell.

Only when the retractable hardtop is functionally and visually faultless again can you proceed with replacing the next roof shell.

Adhere to the procedure described below without fail.

Deviation will result in irreparable damage to the roof mechanism.

Sequence:

1. CENTER ROOF SHELL .
2. ROOF SHELL, FRONT .
3. ROOF SHELL, REAR .