Spring Rates, Motion Ratio, Wheel Rate and Ride Frequency

[85_Z31]

In my own search for calculating spring rates such i have come across these resources

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and spring rate calculator I used and found to be pretty spot on
http://www.pontiacracing.net/js_coil_spring_rate.htm" onclick="window.open(this.href);return false;

an article on calculating wheel rates
http://www.e30m3project.com/e30m3perfor ... f_rate.htm" onclick="window.open(this.href);return false;

If anybody has a good resource on calculating motion ratio please post it here