34 00... Checking brake discs

WARNING: This page is about a different car, the 2011 BMW M3, 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

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

Fig 1: Checking Brake Surface Thickness Using Micrometer Gauge

Courtesy of BMW OF NORTH AMERICA, INC.

Check minimum brake disc thickness:

Position special tool 34 1 280 GAUGE at three measuring points in area (1) and measure.
Compare measurement result and lowest value with SETPOINT VALUE

Fig 2: Checking Minimum Brake Disc Thickness Using Special Tool 34 1 280

Courtesy of BMW OF NORTH AMERICA, INC.