I got a chance to look at my leaking rear struts today when I installed my new pirelli tires. They are kind of seeping liquid

 

Depending on how long it's been leaking, it might explain why your front end feels a bit less stable than you think it should.. Another member is in the process of looking for affordable shock replacements. Might be a helpful reference:

https://www.clublexus.com/forums/ls-...ew-shocks.html

Good luck to you!

 

I am lucky I am covered by ECP. Don't know how much if you need to pay yourself?

 

I experienced a similar issue with my 2011 AWD. Dealer found broken coil spring on left front. Both front coil springs replaced and tire pressure reduced to 33 psi. Car rides much better now.

 

I am very picky. I just installed the new pirreli tires., dealer is ordering new pair for seeping rear struts. If that does't solve the issue, I will ask dealer to recheck the front suspension. With extended warranty, I will make sure my suspension works perfect

 

After replacing the 2 seeping rear struts, don't feel car lands on bare rim anymore when going over the bumps. The suspension is still not as solid as my Previous 430, but overall pretty good. I guess that is the character of the regular suspension on 460

 

Are you certain there isn't anything going on with the front struts?

What PSI are you running still?

 

After the new Pirelli tires and new rear struts, it is better, but they are still little bit weak at the rear, can it be spring or control arms?

 

Sorry to update the fix for the issue so late. It turned out to be the sway bar. The car makes no noise after the sway bar is replaced.