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Old 11-13-2009, 06:08 PM   #2
why?
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Drives: Yaris LB
Join Date: Jan 2006
Location: harnett county NC
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The Progress ones are softer that the others, lemme see if i can find the conversion. And yes, the higher the rates the stiffer. And the higher rates make handling better, in general. But the higher the rates the worse the ride comfort.
http://www.onlineconversion.com/foru...1110951659.htm Here is a simple one.

"Springs are rated in pounds/inch in the U.S., and Newtons/millimeter elsewhere. I have not seen kilograms/millimeter before, but the conversion will be easy enough.

1 pound = 0.45359237 kilogram
1 inch = 25.4 millimeter
0.45359237/25.4 = 0.0178579673228346

The conversion factor is 0.0178579673228346

So, to convert lb/in to kg/mm you multiply by 0.0179 and to convert kg/mm to lb/in you divide by 0.0179 "
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