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Old 12-21-2018, 10:49 AM   #15
Burg Boxster
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Join Date: Nov 2006
Location: In the garage...
Posts: 1,702
Quote:
Originally Posted by JayG View Post
What was the rotor lip thread? I really can't remember that one
In a nutshell... the lip, once pronounced on a worn rotor, is sharp enough and cuts thru the sensor. Thus it completes the ground of circuit thru the rotor which illuminates brake wear indicator light on your dash. Somewhat akin to a vintage bicycle headlight w/ generator for those of us w/ enough chronological experience - LOL

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