I've been having shaking problems in my steering wheel above 90km/h, and have fixed all the usual culprits: lower balljoints, front wheel bearings, axles, checked alignment and tire balancing. The other day I noticed that I can move the steering wheel 1cm or so, if you hold it like you check a wheel for loose bearings. I have yet to check the 19mm nut for tightness, but is there any other reason the wheel would be loose, or shake above 90km/h like that? Info appreciated.

 

check your steering column bolts. there are bolts that hold the steering shaft to the dash frame. also check your steering wheel bolt, remove the t30 screws on the side of the airbag and check the mounting bolt.

 

Steering wheel problem fixed, turns out somehow the 19mm backed off .. still have the high speed shake/vibration to figure out.