I hate how Hy/Ki like to make the rear fenders 1/2"-3/4" shorter stock when the car is level. MY Elantra was the same way, makes it look like the dog dragging it's ass across the carpet. Techincally it's "ass-high", but visually it looks right.
Problem with that is getting decent spring rates for the rears. Fronts, no prob as you can find just about any 2.5" spring rate. The oddball divorced spring from shock with two different diameters in the rear made it extremely difficult. That's why when I found someone doing custom spring rates on complete coilovers I jumped at them!
I was actually leary of Ksports. Every old ksport kit I'd seen to date were absolute junk. A lot of XD people used the GK coilovers on their sedans and they fell apart inside of 2 years. Struts blown, adjusters siezed, pillowballs falling aparts etc. I think I helped remove 3 sets of them.
They have since changed production and have a decent rep now adays. It was worth it to give them a shot.
You might be able to offer the advice I'm looking for with your "tinkering" with rear suspension.
I don't want to alter the height or spring rates, but on my daily run to and from work I travel over some serious bumps in the road that set the rear into a harmonic bounce. I don't bottom out, but it's awfully annoying. Additionally, I took a run down the coast last week to visit relatives for Christmas.
4 full size adults, a dog, and two hamsters along with a FULL trunk. The rear sat lower (as expected) but there was no way possible to count the number of times the rear bottomed out.
I seriously need to up the dampening. It seems that Kia dropped the ball when they decided what shocks to install from the factory.
So... to stop the road humping during normal use, which shocks would you suggest?
I don't do full-load trips often and keep the trunk as empty as possible normally.