Your running 65psi in your tires and can't figure out why it rides hard? Probably feel every speck of dust on the road running them at that pressure.

 

Here's the cliffsnotes. I know reading through the whole thread is really, really difficult, being just over 1 page...
1. Originally ran 65 PSI b/c lower PSI yeilded a poorer ride (the vehicle shook like crazy the more the PSI was reduced).
2. Fixed more suspension components & can run 50 PSI with a smoother ride (still feeling imperfections).
3. Have been running 46 PSI cold (temp dropped 15 degrees) for the last 2 days & the ride has been about the same, maybe just slightly worse.

There's no bumping, shaking, wobbling or anything else from the rear. Everything has been from the front end. The only major components effecting the ride at this point would be the ball joints & bushings on the LCA. Considering that the UCAs were worn out (new bushings/ball joints confirmed this), I'd bet that all parts on the LCAs are too, since they take much more abuse.

Not sure what tires you're running, but the KO2s, as a whole, ride pretty well, even at higher PSIs. The rubber is surprisingly soft The original KOs could be run at max if the suspension wasn't worn out (though that was a D load tire). Ask me how I know. Now, if they were Toyo ATs, then yeah, they'd have to be aired down a lot as those ride like cement blocks.

 

I run Ko2's at 37, rides like it is supposed too no problems. Maybe you should have a competent tire shop balance the wheels or check for an out of round wheel or tire.


I've replaced almost everything in my suspension except for the following:
1. CV joint
2. Wheel hubs
3. Lower control arms


Great. Except 2 out of 3 are drivetrain components not suspension, but by all means keep throwing parts at it, sooner or later your bound to fix something by accident.

The more I replace parts the lower air pressure I can run?

Suuuure.

 

Ran 37 PSI for about 20 miles today on a "test" stretch of road I always take it out on, just for the hell of it. Ride is worse.
Adjusted the shocks to "soften" the ride as well, still bumpy, at least in the front. Hitting bumps at low speed felt worse. It still jars & isn't as smooth as the old H2 I had.

At this point, it's probably the worn out ball joint & bushings on each LCA.