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Old 06-02-2013, 11:27 AM
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RAM EM RAM EM is offline
Dodge Ram Forum Senior Member
Join Date: Aug 2012
Location: Florida
Age: 43
Posts: 938
Gender: Male
Vehicle: 2012 Hemi express quad
Trim Level: ST express
Color: Grey
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 3
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Nice truck OP!

Originally Posted by Turbo-Bug-9.40ET View Post
I know exactly what your talking about. I asked the tech a mcgaughy's why the spring was like that.He said it's a progressive spring- softer at the top stiffer at the bottom. I asked how the top worked when the top 4 coils sit on each other. He didn't know!!!
The springs are designed that way so that when the suspension decompresses the tighter-wound coils expand open and softly transition the suspension through the compression phase of the suspension cycle, hence the term "progressive-rate". Just helps soften the ride some, unless you cut them off, lol!

-DS Trinity- Hemifever tuned - 18" Magnaflow - BT catch can - 180 Tstat - 22" SRT10's - 305/45 Nitto 420 - SG 2/4 drop - blacked out heads/tinted tails - dechromed/debadged - 20% tint-
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