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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > 6MT guys just curious



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      08-27-2009, 10:53 AM   #45
Groverkb
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Drives: 2008 E92 6MT
Join Date: May 2009
Location: Peoria, IL

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Quote:
Originally Posted by kenneth View Post
Mostly in first gear, no e-brake on level or slightly inclined surfaces. Might use e-brake on steep incline.

Folks that do tracking (hot discs) never use the e-brake after their sessions, otherwise the discs are warped and ruined.

I've always wondered how this happens, since the e-brake isn't using the rear service brakes. It's a drum brake inside the rotor. Is it just the pressure on the inside of that drum with the very hot rotors that cause it to actually bend a little?

I just use the e-brake on mine, but my driveway is pretty flat, and I could leave it with nothing set and it wouldn't go anywhere.
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