What causes steering wheel shake???

i have the same problem and would also like to know

1. i first thought it was the rotors, changed them
2. then i thought it was the wheels not being balanced, got new wheel/tire combo still shakes
3. possibility it's the alignment, but i don't think so
4. steering rack bushings?
 
does it do it only when you apply the brakes or does it do it whenever? First thing I would check if its just when you hit the brakes would be the rotors. If they arent too bad, you can get them turned fairly cheap.
 
well, for me anyways, it shakes when i apply brakes and i've already replaced rotors (but i did the pads the day after... dunno if the pads could warp the rotors that quickly)

alignment is coming

do you guys think "outer tie-rods and balljoints need to be replaced" actually cause that? or could it be steering rack bushings too
 
If it shakes when you are just cruising it is most likely an unbalanced tire. My car threw a .75 ounce wheel weight on the right front a while back and the steering wheel shaked like hell between 40-55mph.

You wouldn't think a little weight would cause that, but it will.
 
Wide tires also send more of the vibrations from irregular road surfaces through the steering wheel. Just when I start getting concerned about the vibrations in my steering wheel, I get to some recently paved roads and it goes away.