Mobile brake disc lathe

WARNING: This page is about a different variant/trim than selected.

IMPORTANT: Only BMW-approved brake disc lathes may be used!

In the case of mobile brake disc lathes, the brake caliper and the brake anchor plate must be removed.

The brake discs remain on the vehicle.

Please refer to the equipment manufacturer's operating instructions for the exact procedure.

Fig 1: Identifying Mobile Brake Disc Lathe

Courtesy of BMW OF NORTH AMERICA, INC.

After fine-grinding the brake discs, measure the THICKNESS DIFFERENCE inside the braking surfaces at 8 points with an caliper gauge.

Fig 2: Measuring Brake Rotor Disc Thickness

Courtesy of BMW OF NORTH AMERICA, INC.