Thread: Z4M Ground Control Coilovers
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      03-31-2009, 01:48 PM   #13
OutOn
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Drives: Z4M Coupe
Join Date: Oct 2008
Location: Spain

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Originally Posted by OutOn View Post
What about my third question?

Are 500/600 (front/rear) good spring rates for track days?
Jay´s (Ground Control) recommendation for track days for the Z4M is 450/550.
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