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      07-09-2010, 01:42 PM   #5
rzm3
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Drives: E92 M3
Join Date: Aug 2007
Location: USA

iTrader: (14)

So here are the spring rates I know people have used:

800/1100: user reports rear could be slightly softer
550/900: user seems to be happy but needs more testing
500/800: the kw rate which many have tried and seems to be a good balance
500/750: slightly understeer but a good, safe set up

Again, there is no magical formula. The set up could vary based on the track you are driving on, damper settings, and driver preference.
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E92 M3 DCT