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      10-11-2012, 11:12 AM   #17
sohcpunk
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Drives: 2011 335d
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I think the problem everyone is experiencing is if you pair up the FSDs with a higher spring rate such as the Pro-kit or H&R. FSDs are mean't for only OEM springs. It should pair well with the sport springs or bmw performance springs. Anything over that will be too aggressive fort he FSDs which will cause premature failure.