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      05-01-2012, 11:17 AM   #10
understeer
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Drives: 2009 BMW M3
Join Date: Feb 2012
Location: Berkshire County Mass.

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Quote:
Originally Posted by smallseafishie View Post
I'm not a vert owner so I can't say I'm right...

But I believe that the reason the headrests don't go up and down is that the headrest serves as a roll over protection device. When the car "senses" that it's in a roll-over situation, the headrest pops up.
The headrests themselves do not serve as rollover protection. The pop up rollover protection is located behind the rear seat headrests.
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