34 00... Checking brake discs

WARNING: This page is about a different car, the 2014 BMW X6 M, 2013 BMW X6 M, 2012 BMW X6 M, 2011 BMW X6 M, and 2010 BMW X6 M. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

34 1 280

Necessary preliminary tasks:

Remove WHEELS .

Checking thickness difference:

Measure thickness difference within brake surfaces at 8 point (spread over the circumference) with a micrometer gauge.
Compare measurement result with setpoint value . See FRONT BRAKE, BMW, E71, E72 or REAR BRAKE, BMW, E71, E72

Fig 1: Measuring Thickness Difference Within Brake Surfaces Using Micrometer Gauge

Courtesy of BMW OF NORTH AMERICA, INC.

Check minimum brake disc thickness:

Position special tool 34 1 280 at three measuring points in area (1) and measure.
Compare measurement result and lowest value with setpoint value . See FRONT BRAKE, BMW, E71, E72 or REAR BRAKE, BMW, E71, E72

Fig 2: Checking Minimum Brake Disc Thickness
Courtesy of BMW OF NORTH AMERICA, INC.