Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW2009535XI 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2558 (BRAKES - REPAIR - E90)BRAKE TESTING AND BLEEDING34 00... CHECKING BRAKE DISCS
2009 BMW 535xi 4D Sedan, Automatic
34 00... Checking brake discs
2009 BMW 535xi 4D Sedan, AutomaticSECTION 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
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
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.