lexphin

What changes are made to "stock" suspension on these two options, lowering springs? f springs? f sway bars? other? And are the changes the same on both X and Sport?

JDKane527

iTrader: (10)

They have the sport springs, eibach springs, and they have sport shocks which are a bit stiffer than the stock oem shocks. No f-sport parts though.

Kurtz

iTrader: (1)

Yup, sport springs and shocks... the springs are 10mm lower in front and a bit stiffer all around... unlike the F-sport springs they are linear (which is better IMHO)- no changes to the sway bars at all.

Sport suspension parts are the same on X and Sport packages, you just get a lot of other extra stuff in the sport package.

tmaung

Minus the x-package wheels. Had an X package and loved the suspension. Can't go wrong with either x or sports.

IS-SV

I agree, the sport suspension from the factory is a nice setup, that's how my IS350 was delivered.

A couple of weeks ago I changed to Eibach 350 springs (essentially F-sport springs) with progressive spring rates and was pleasantly surprised by the reduced body roll and added stability in high speed sweeper turns. Of course most people choose the Eibach springs for the look (about 1" lower), but there is some handling improvement that might show in track testing (of course that's academic). Edmunds tested a IS250 with F-sport suspension and got favorable results without a big degradation in ride quality.

Keppie

I think the X - pack is a deal. Where else can you get nice wheels and upgraded suspension for that price?

I have the X - pack and love it!