Alon King

And if you rest your hand lightly on the shifter...? Is the stearing wheel vibration rotational or....? If I rest my hand lightly on the shifter, there is no significant vibration. Not sure what you mean by steering wheel vibration rotational. It vibrates wheter or not I turn the wheel, of course at 70 mph, not turning the wheel that mcuh. If you mean does it come from rotation of tires, not sure. Could be steering parts. No clunking as I go over bumps...so thinking maybe not ball joints.

And if you rest your hand lightly on the shifter...? Is the stearing wheel vibration rotational or....?

This is my first post. I have a 94 ls400 with 165000 miles. It has developed a distinct vibration when driving at speeds over 70 mi/hr. It is predominately felt in the steering column, but also to a lesser degree in the front seats. It seems to be speed related only. Doesn't happen at lower speeds or while braking and still ocurrs with trans in neutral. I took it for diagnostic and mechanic said ball joints were worn. In research, failing ball joints are not associated with speed related steering vibration. Can anyone shed any light for me on this? Would appreciate it very much.