Originally Posted by scham21
...Unless your taking your 50,000$ lexus on a track i doubt the upgrade to suspension and all is needed...
The reason I bought the F Sport over the Luxury is the bigger front brakes and front brake cooling ducts (yes, I take my car to the track).
Oddly, the suspension upgrade is not much of an upgrade. Spring rates are the biggest single factor in making any car handle better; anti-roll/sway bar bars are next. But all GS 350s use the same springs and the same sway bars.
Dampers are third, and are typically set to complement the spring rates. In practice, adjustable damper settings are nice but are really more about fine tuning for a specific set of springs and don't add much to actual handling ability. They do increase driver feel, though, and that is something welcomed by any spirited driver.