Join Date: Sep 2004
Location: Naperville, IL, USA
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Well said, Autotecnica. However, you omitted one even *bigger* reason for not having a fully-coordinated set of shocks/springs front and rear: HARMONICS
I know that doesn't make sense...but hear me out. As you drive, your car goes over bumps and the up and down motion creates a frequency, much like a sound wave. When the front and rear frequencies are mis-matched, the car will go through strange oscillations. Engineers spend hours designing the car so that when you're driving at different speeds and going over bumps, the frequencies smooth themselves out.
Go try this. Have you ever driven on a concrete freeway at 55 and then again at 75? In my case, the expansion joints ar placed at a location that due to my 325s wheelbase and spring rate, it feels much smoother at 75 than at 55. (Autobahn tuning, thanks very much!)
Anyway, if you put a much higher spring rate in front and leave the rear stock, be prepared to experience strange oscillations and unpredictable handling. It is not advisable.
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