sho3000cc

When I go through curves at speeds over 65mph, my gs400 with factory struts and eibach springs, duck and sway as if the car wants to go side-ways at the rear.....like a wobbling motion....Any solutions on this??? Thanks cjj

bitkahuna

iTrader: (20)

Plenty of solutions - easiest one is L-Tuned springs/shocks. Or Eibach Pro springs and Bilstein shocks. Or Espilir, or, more expensive, coilovers.

nudderGS400

Just a suggestion, but start simple, get the alignment checked by someone you trust just to eliminate the possibility of that being part or all of the issue.

If you are going to add stuff then consider Toms 6pc kit and/or Toms LCB for the rear. They help keep it planted by eliminating flex back there which occurs when you are cornering.

How many miles on the car? The stock struts may be an issue if it is much over 40K. How long have you been running the Eibach springs with it?

Have fun.

mooretorque

The stock struts on the GS are pretty limp/flaccid things which don't produce enough motion damping for a Kia much less the GS. If your Eibachs have changed the ride height, then the struts will also wear out faster than normal (and by 60k I'd consider replacement even under ordinary circumstances) and be even less succesful at a job they don't do very well to begin with.

So, for immediate relief, I'd agree with bitkahuna; replace your struts with something designed to fit the Eibachs (since you've already got them, this would be the most cost effective route). Have the alignment checked at the same time. If stil not satisfied (I wasn't), add STBs (and the rear LCB, though I think the STBs may be enough for most street driving).

At this point, you should have a GS that feels as if the whole car moves as a unit, with steering that feels more responsive and a rear end that doesn't wobble rather than that disconnected, body swaying on top of the suspension feel that is unfortunately characteristic of the stock setup.

Keep us posted!