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      02-25-2009, 05:31 PM   #41
Mr. 5
Modder Raider
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Drives: M3
Join Date: Apr 2007
Location: Surf City, HB

iTrader: (31)

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2007 e90 335i  [4.00]
Alright guys,
I just ordered these springs, but I'm really curious with the comparison between the springs.
I would love to find the rates of the performance springs but I don't have a device to read the spring rates.

Wouldn't it be possible to get the spring rates of the performance springs based on already knowing the spring rates of the ZSP springs?
I'm thinking that I can if the diameter of the springs didn't change from one to the other.

The OEM Sport springs have the following rates:

Front: 145 lb/in
Rear: 460 lb/in

e36 M3 Coupe, e36 325i Sedan
e90 335i--SOLD

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