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Old 12-12-2012, 06:29 PM   #32
Registered User
Join Date: Nov 2007
Location: CT
Posts: 35
My Ride: 2004 330Xi
The 06123 has tapered ends where as 06164 has uniform thickness of the coil. Spring rates matched for Xi sedans calls for 06123. I am also using 06164 currently and do not notice any difference in handling.
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