Car steering wheel kind of moves by itself when driving

[msrdude]

I have a 96 corolla and whenever I drive, the steering wheel kind of move by itself at times, not always like 1 time every 3 times driving up to 40 mph or higher. Its like something is uneven or it is hitting some kind of bump that is causing the steering wheel to kind of move. The road is kind of uneven and has some bumps, but it should not cause the steering wheel to kind of move. My steering wheel moves very easily btw. The alignment is fine, (except the rear camber, but that is not adjustable) the rear tires are new and the fronts are almost bald but I re-balanced them, and Im guessing the rotors need to be re-surfaced but I havent replaced the brakes in years and when I did i re-surfaced the rotors.
Does anyone have any ideas of what is going on?

[dJcHiKo]

just taking a guess but make sure all the air in ur tires is even
i had that same kinda problem and that was my solution
but good luck!

[Rip The E Brake]

check tire pressure... if thats not it.. tie rods, tie rod ends or ball joints for sure...

[gold94corolla]

out of alignment?

[cipher93]

Minor moves could be normal depending on the road surface. If it is jerking to where you need to hold on tight to keep it steady, I would suggest checking your air pressures and then tie rod/tie rod ends as mentioned above.

[speedy25]

Worn front end/suspension parts. Start with new tires and have a GOOD alignment shop check components carefully.

-SP