I have a 99 Civic EX.

There are no sway bars front (removed) or rear. No tower bars. I have stock 99 Si springs (200F / 100R) and I get this jarring and harsh motion where all the bumps are felt in the cabin.

The rear shock / spring assembly was replaced brand new (OEM) less than 10k ago. I've tested the front shocks with the "rebound" test and them seem to hold they're own. I don't get it though, with such soft spring rates why is the ride so harsh?

 

Worn bushings?

 

Everything seems to check out? I mean they're old, but they don't seem torn from a visual inspection.

 

Sounds like you have a blown strut somewhere. Did you take off the wheel and make a visual inspection of the struts yet?

Any noises when you go over the bumps? Rattling...clunking... squeaking?

 

TIRE PRESSURES TOO HIGH ?

 

I'll double check, if anything they're too low.

I've visually inspected them, any there's no leaks. Is there something else I should be looking for?

The best way to describe it is a jarring sensation. It feels / sounds like the car is going to fall apart - it's just not solid.