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      08-05-2011, 01:00 AM   #16
AMP
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Drives: E34, E39, & E60 M5; E92 M3
Join Date: Mar 2010
Location: Tucson, AZ

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I'm not familiar with the specifics of the KW3 on the F10, but that sounds like a good price given all that is involved.

The key to an adjustable suspension like that is what is called corner balancing. This is a process in which the 4 corners of the car (wheels) are placed on scales and the weight of the vehicle is balanced so that the sum of the left front + right rear = right front + right rear. This process is essential to maintaining suspension geometry and tire contact under all driving conditions. Measuring ride height at the four corners isn't sufficient as that doesn't take into account the actual load on the suspension and will lead to a situation in which one wheel isn't carrying it's full load. This will cause the car to rock back and forth much in the same way a table with a short leg is inherently unstable.
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