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      10-16-2012, 07:03 PM   #13
Bill B.
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Drives: '12 135i, '13 X135i '15 S1000R
Join Date: Sep 2011
Location: Cary, NC

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Quote:
Originally Posted by Monterra View Post
Eh, not exactly...35i model is standard with servotronic, which if I understand correctly is EPS layered on top of the hydraulic. I haven't driven a BMW with straight EPS but I'm guessing similar to servotronic equipped cars...ie lighter, still precise but somewhat artificial feel.
EPS does not equal servotronic.

Servotronic is the concept of speed sensitive power steering. On a hydraulic rack, it is accomplished by using an electromagnetic valve to modulate the hydraulics.

An EPS rack is driven completely by an electric motor. It can have servotronic (speed sensitive steering) as an option or not. On an EPS rack, it is essentially just software.