My main complaint with my Z (2005 Touring) is that it seems to bee really fussy about how it wants to go around a turn. When I'm driving hard, I can plant the nose with the brakes, roll into the turn, and it sticks like mad. Wonderfull in the twisties on summer days.
However, when I'm just commuting to work, over the same twisties, it REALLY likes to push the nose out in turns, especially when going uphill. I figure this is partly my driving technique, and partly the suspension setup on the car (bone stock).
It just seems like the front wants to wash out in the turns unless I'm driving really hard, and have put a ton of weight on the front-end to keep in planted in place. It doesn't help that when driving lazily, I often coast into a turn, and lightly accelerate through it. Which transfers the weight back, lifts the nose, and it starts to push to the outside of the turn. If I let off on the throttle, the nose comes down, grips more, and turns in nicely, but I don't want to decelerate my way through the turns.
I'd really like something that carved in more on the turns. Both my wife and I have noticed this with the car (we split the driving time 50/50). The other car (2004 WRX) is much easier to toss through a turn at low speeds, although it rolls like mad).
My thoughts are that for problems that show up during spirited driving, I should try to fix me first, and then the car, but this shows up mainly when driving much further back from the edge.
Anyway. I've thought that what I needed to do was swap out the sways for a set like the Hotchkis that stiffen the rear up more than the front, to induce more oversteer. Also, I know that the staggered tire size setup also increases the understeer. I'm not looking to change up wheels/tires right now, though (running stock wheels, and KDW2's).
However, it looks like all the coil-over setups shift the roll stiffness to the front, which seems to me that they'll make it understeer more?
Also, how much of this can be tuned out with a different alignment. I'm going to realign the front to ensure that the toe isn't eating up my tires (starting to feather a touch at 25K miles on the car, 8K on the tires), and was thinking I could bump up the rear camber at the time, if that will help.