Well nc211, to answer your questions:
1) the car doesnt wander at all, in fact i replaced my tyres completely 5 days ago (this was because my old tyres were really old), and balancing was done. i didnt do any alignment cause there is no wander.
2) no vibration on brake pedal at highway speed either. When i apply the brakes, there is no vibration and no humming, the previous owner put in new brake discs and never experienced braking problems.
my ls has 115k miles on it so far, it runs like a dream, very very smooth and the engine is superb.
This feeling only comes when i'm turning and its mostly when i'm turning slightly right at high speeds, i know its not from the tyres, and i feel the vibration at say once a second when i'm driving at around 50, so i cant say whether its related to the speed or not, and i feel thats its mostly from the driver side but i cant tell for sure. there is no slight wandering sensation in the steering either, but you have one point, there is a minor clunking noise when i go over bumps, very minor but i know the feeling cause i experience this with my 1990 LS more. do you think that is the reason?? and how can i tell for sure whether its the outer tie rods or the ball joints?? any idea on how much it would cost to repair for either??
thanks again