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Suspension & Braking
Have some questions about suspension or brake setups for your E46 BMW? Get all your answers here!

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Old 06-21-2019, 07:59 AM   #1
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Retracting the brake piston: what did it?

When your foot is off the brake pedal, what retracts the pistons in the calipers?
If nothing retracts it, wouldn't the pad continue to grind with the rotor until it gets nudged off slightly?
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Old 06-21-2019, 10:57 AM   #2
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The seal retracts the piston when there is no hydraulic pressure from the master cylinder.

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