Lets hear what the suspension guys have to say about T bar life...........
The spring rate degrades like any spring. But the sagging is more pronouced than the loss of spring rate. sagging in the front is really much of a Mopar issure, as you can just turn the T-bar up and adjust the sag point.
If you want to know the spring rate degradation, you need to put it in the Spring Rate machine. You just need to make fixturing to hold a t-bar and lever arm to a traditional coil spring checker. Sort of like a leaf spring rate machine.
Those strange shocks are just QA1 adjustables. I run those on my Cuda. They're nice
