Forum Discussion
ib516
Apr 27, 2014Explorer II
JIMNLIN wrote:
Your new 2500 Ram has the 6200 RAWR with the coil springs. Your old Mega 3500 SRW had 6200-6500 ?? RAWR. How does the ride and handling the same pin load compare between the two trucks rear suspension.
I know you haven't hauled other heavy loads yet but was I was interested in rear suspension performance as it handles the load.
Does the coil spring have a aux overload spring pack or is the coil a progressive overload.
Sound like Ram hit another long one with big block like performance from the 6.4 Hemi.
The 2007 3500 SRW had a 6200# rear and 5200# front Gawr.
The 2014 2500 has a 6500# rear axle, and 5500# front Gawr - 300# more on each.
The coil springs have no overload set up, just the one spring with varied coil spacing for a few different spring rates. I measured sag on both trucks with the same RV, and they are near identical (1.5"). The 3500 had torklift stable load spring perch extensions I added which caused the overload leaf set to come into play earlier than stock for my tests. How much more it would have sagged without them I don't know.
Here's a picture of one of them, it is the big rubber block just above the overload leaf.

They ride different from each other, but it's more than just the springs. The new truck obviously feels more stable & planted, but that's likely because it is new and has the newer frame design with more roll stiffness. Where that's really evident is when you enter a parking lot over a rounded curb. The old truck would lean more side to side and throw your upper body around more.
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