really bad shuddering through steering wheel
 

my missus has a 1995 thats shes spent alot of money on its had new wheels and all tyres they been balanced, and laser alligned and shes even replaced some of the wheels with new ones and more tyres and balanced and allined at a diffrent garage but the shudder through the wheel is really bad right through the revs and gears worst prob around 70! somone said its the wrong boss kit fitted? i dont know what it could be anyone had this?? as shes spent bout 1500 and its still the same shes got new sti suspension here ready to go on but surely that wouldint be it anyway?:mad::eek:
any help????

wheel bearing ?

If you can put the old wheels on and see if the issue goes away. If does not check steering racks wheel, suspension, etc make sure all is tight and do not drive the car in this condition as it is very dangerous.

na its deff not a wheel bearing! and the issue does not go away with other wheels so surely it doesint leave much how do i check steering rack or what to look for its getting new suspension fitted maybe tomorrow so ill check them when they come out! anything else it could be? could it be the boss kit? the steering wheels solid no movement just the shudder when driving

Bent driveshaft possibly.

im no mechanic but try and do most work on the cars masel purely cause i dont trust garages for various ripping off reasons is there an easy way to check the driveshaft or steering rack thats easy to say yeah thats knacked?