I test drove the 11 GS350 again today, I kinda like it. Will probably make a decision. Think it was sitting quite a while before the other day.
The car pulls to the right at highway speed. Not extreme, but enough to be annoying. I looked at the lexus owner site that has much detail about the car.
Likely needs rotors, brakes shake the steering wheel. does not feel smooth.

It was brought in many times for squeaks and rattles (they put felt on everything)
Had issues with rear brake caliper seizing (not a surprise in saltville)
Had concerns with pulling as well.

Wondering if these cars pull a bit? I drove my Explorer on the same road and it is straight as an arrow. I do my own alignments, I know a shop.

Also, takes potholes harder than the Torsion Bar Explorer with stiff shocks. Does not have Automatic ride control. At least the struts are still good.

Supposedly the alignment was checked on the Lexus, but the place said they will look into it. The tires are mismatched, 3 no name and one Mich on the rear.

 

The mismatched tires are mostly likely the cause.

 

First I would check air tire pressure! Then it could be the right rear caliper maybe seizing on you, wont hurt to take both rear brakes and grease them up.

If the cars high mileage or has lived with rough roads. There is a bushings thats known to go out, its the front lower control arm rear bushing. Its easy to replace and cheap but you will need to do a wheel alignment afterwards.