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      04-15-2017, 10:29 AM   #34
JJZ4MR
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Drives: 06 Z4M Roadster
Join Date: Nov 2016
Location: Largo Fl

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Great thread, trying to gain some info on spring rates stock VS options. Have a local in Tampa who has BC Coilovers up for sale on here in Classifieds. I'm not really ready to install. They sell new for $1000 shipped, his have one year of use use 5K miles/like new condition he wants $800, figuring if I could get him down to $500 I'd squirrel them away for when I'm ready.

Here's my nube question : Spring rates are 6K and 8K. Are these additional to my stock springs ? Are the stock springs taken off as well as shocks when going with coilovers ? I looked at a coilover DIY instructional and was still unsure ? What are the stock spring rates of my 2006 Z4MR ? I've just started AX ( 2 completed and love it ) and I plan on moving up to HPDE in the near future ( Sebring )
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