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      06-21-2013, 08:42 PM   #7
John_01
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Drives: E90 325i, E82 135i
Join Date: Mar 2009
Location: Sydney, Australia

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Hi DeepOvertone,

I looked at your document, but I think its a bit simplistic to think that each modification can be understood in isolation. It really depends on the context for the modification. It depends what suspension modifications have already been done, what the car is being used for, the quality of the roads, and what the user can accept in loss of ride quality.

For example if people are building a track day car, in most cases they wouldn't even care how much harshness comes though the suspension. Also the sequence of mods will make a difference. People may notice and increase in vibration and harshness of M3 front arms in isolation, but if they already using camber plates with spherical bearing mounts, then they probably wouldn't notice any change. The same thing with sway bars, because the sway bar will perform completely differently whether the car has stock suspension or a high rate coil-over setup.
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