Geometric characteristics of CDs and DVDs Shape of the CD

All CD or DVD drives in the vehicle may only be loaded with standardized CDs. CDs that do not conform to standard can damage the changer. Only CDs that comply with the specifications for geometric characteristics may be inserted in the CD changer.

Fig 1: DVD Diameter

Courtesy of BMW OF NORTH AMERICA, INC.

Only the CD shape shown above is permitted. In addition to this shape, the specified characteristics specified below must also be correct. The changer can only work without errors if the shape and geometric characteristics match the specifications.

The following illustration shows possible shapes that do not conform to the standard. These or similar shapes can damage the drive.

Fig 2: CD Shapes

Courtesy of BMW OF NORTH AMERICA, INC.