Originally posted by Dragonhealer
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Spring rate numbers can be very confusing. The rate numbers are meaningless without a full explanation of the springs (ie wire diameter, distance between coils, length of spring, and winding diameter.) A 150lb rear 1 7/8 I.D. spring will be behave much differently than a 150lb OEM spring because the 2 springs are different shape, length and diameter, as well as being made of different wire.
The spring rate tells very little about the actual tension of the spring when installed and compressed, or how it will behave when compressed 4 or 5 inches. We should never use rate alone to compare 2 completely different spring designs, because this is misleading, and will confuse people.
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