Thread: OEM Spring Rate - Z4M Coupe
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      07-12-2012, 07:20 AM   #1
Kgolf31
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Drives: 2007 Z4MC, 2012 128i
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OEM Spring Rate - Z4M Coupe
Has anyone ever figured this out?

I've been searching and searching to no avail. They aren't progressive springs, are they?
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