Quote:
Originally Posted by YodrOne
This is why highly developed, track oriented coilovers (a la Ohlins R&T) often run a rear biased spring setup. I ran that setup in my e46 M3 and the rates were 400F/630R. It was definitely a track vs autocross setup.
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Without factoring motion ratios, spring rate bias is pretty useless. Not saying you're wrong with the theory, just that if the motion ratios are different front vs rear on the M3 like they are on the FRS then you need a higher spring rate out back just to give equal wheel rates. That's not taking any handling bias into account either.