Quote:
Originally Posted by dmw16
Currently on my E46 M3 I have Billstein HD shocks and Eibach springs. I bought the setup upon discovery that my factory rear spring had broken and at the time hadn't really thought about track-duty.
I am now getting my car ready for track-duty as a more primary focus (it's not my DD) and I'm wondering if I'd do well to upgrade/change-out the Eibach springs with a set of linear springs like Hypercoil or Swift?
If so, how do I go about selecting spring rates, length, etc?
Thanks.
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You should contact Harold at hpashop.com..He's very knowledgeable on suspension tuning for BMWs.
He's also a vendor here on the forum
http://www.m3post.com/forums/member.php?u=20060