severe shaky steering wheel issue at +55 mph s14

[I wana 240sx]

I know there are many thread already, but sorry Im getting desperate by now. I've change two ball joints and two outer tie rods. I got an alignment done and two different wheel balance from different places. One static balance and the other is road force balance. The tech said my steering and suspension is ok and even check my wheel bearing. My steering wheel still shake like crazy, its almost the hole front is shaking. I even change my spacer to 10mm from 8mm. My rims are 962 18x8.5 and 9.5. Any possitive feedback will be deeply appreciated !

[SmithSR]

Put on factory wheels and then drive it. Fixed. Seriously. Test drive the car with factory wheels and tires and I will bet you whatever you'd like to bet, that the problem is cured.

[nifares240]

what kind of spacers you put on? hubcentric?

[Madcrazyness]

yeah i get the same thing when im goin on the highway but my car is competely stock an s14

[Dazzla]

its the front upper/lower control arms

[SmithSR]

Won't know until you take off spacers and heavy ogre-like wheels.

[nissans13240sx]

Put on factory wheels and then drive it. Fixed. Seriously. Test drive the car with factory wheels and tires and I will bet you whatever you'd like to bet, that the problem is cured.

I have seen where the steel belts shift inside the tire and it causes a shimmy. Sometimes the road force balancer will pick it up sometimes it wont. Do what SmithSR said and put factory wheels back on and see if it gets any better.

[I wana 240sx]

Thanks for all the great input. I swap rims and put the factory set back on and even not install the spacer. Now I notice there is still a little shake, but not as bad as before and the shake is periodically. Im going to balance all four of my stock tires and well see how that goes.

Thanks again to all !

[GO240]

your after market wheels need to be balanced thats all my old hatch did that because i had 280 wheels that werent balanced on it