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now let's look at the high speed damping. this is the slope to the right of the 'knee' in the velocity plot. ideally, we want a lower damping ratio of around 0.2 - 0.3 to reduce discomfort over high frequency bumps at speed.
the min setting gives us a damping ratio or 0.24, but it's a little underdamped in rebound compared with compression.
the mid setting has a damping ratio of .25; still biased against rebound
finally, the max setting has a damping ratio of .26 with an even greater bias against rebound.
so what would the ideal damping curve look like for this spring rate on the front of a boxster? well there is no true 'ideal'; it's all compromise.
for a streetable track car, i'll go with a low speed damping ratio of 0.7, high speed of 0.2, and a knee at 4 inches / second. look at the chart below for a comparison of my 'ideal' front shock curve for my 400lb springs to the 'mid' setting on my ksports.
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