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      06-04-2012, 02:59 PM   #4
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Drives: 2013 E92 M3
Join Date: Apr 2012
Location: League City, TX

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Originally Posted by marconi118 View Post
We all are wondering how the ZCP suspension is about 1/2" lower than normal one.

I had the opportunity to measure the distance from the lower spring perch to the wheel carrier bolt, on both a ZCP and non ZCP strut, the distance is always 190mm.

This means that the ZCP car is lowered only by the length of the springs.
The struts have the same exact length; but maybe the ZCP ones are firmer.
what else would it be lowered by? the springs set the ride height and support the vehicle. the struts only dampen the oscillations in the spring. for 1/2", they probably have a strut that can cover that small difference without creating two different struts. makes sense. firmness of the struts will have absolutely zero effect on static ride height as you measured it. they will still compress until the springs support the car.