Quick story:

Installed Eibach sports with stock shocks and had no problems.

Recently replaced shocks with Tokico D-Specs. Now, every time I hit a bump my steering wheel moves one way or the other. Lots of vibration in the steering wheel during normal driving.

Bad alignment? Other problem? Thanks for the help.

 

Do to the nature of dropping vehicle ride height we will all have bump steer depending on the amount the car is dropped. Fixing it is beyond the scope of things that 99.99% of owner's will want to get into.

http://www.racerpartswholesale.com/longtech3.htm

 

^ What he said.

I'm dropped a little over an inch all around on Cusco Zero 2s. When I hit some substantial bumps on the highway on my daily commute I experience bump steer when not holding onto the steering wheel tight enough.

 

^+1

Watch out for those highway interchanges...there is usually a change in the level of pavement when entering/exiting a curve and if you push too hard, that little bump is gonna throw you into the wall

 

I bought "offest rack bushings" for my mustang to correct this; they re-align the steering rack to match the drop.

Anyone sell these for the g?

 

Every car has some bumpsteer. Oem suspension is balanced inthat the bumpsteer curve [graph] is symetrical around the normal ride height.

Heavier or lighter than 150 pound drivers or passengers or no passengers will change the ride height to assymetrical side to side so one get different rates turning left or right or over non perpendicular [angled from 90 degrees] bumps.

One must lower the tie rod end attachment point by the amount of body lowering so the tie rod angle is parallel to road.

Stiffer than oem springs overwhelm the builtin compensation in steering rack so rack preload and resistance must be modified.

People usually do nothing but complain and adapt.
http://www.longacreracing.com/articles/art.asp?ARTID=13
http://www.panteraplace.com/page135.htm

 

Maybe your Tokicos are set much stiffer compared to your OEM shocks.

 

My tokico's are 1 turn from fully Firm - maybe I'll back it off a bit.

 

You can always add a horizontal weak shock absorber to a tie rod and rack [like Lexus does] to dampen abnormal sudden changes.