34 00... Checking brake discs

2013 Mini Cooper Countryman, Standard TransSECTION 34 00... Checking brake discs
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Necessary preliminary tasks: 

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 or REAR BRAKE .
Fig 1: Measuring Thickness Difference Within Brake Surfaces Using Micrometer Gauge
G08470689Courtesy 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 or REAR BRAKE .
    Fig 2: Checking Minimum Brake Disc Thickness
    G08470690Courtesy of BMW OF NORTH AMERICA, INC.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.