Are you sure this is really needed? In the Consumer Reports avoidance
maneuver test, the Five Hundred did 49.5 mph. A Mustang did 51.5. Not a lot
of difference in my mind given how much larger, heavier and especially
taller a Five Hundred is than a Mustang. A Toyota Avalon could only do 48
mph (and we know they are PERFECT).
I suspect you would be better off looking for better tires, and maybe
running a slightly higher tire pressures. People often get sucked into
buying stiffer shocks that ruin the ride and don't actually do anything
measurable for performance (but they do feel sporty I suppose - feelings are
often more important than reality). If you really want to spend a lot of
money looking for small improvements, lowering the center of gravity by
getting different springs is probably the best way to improve avoidance
handling. I suspect the Freestyle has stiffer anti-roll bars, so you might
look into buying a set of those. They should bolt right in with minimal
I recommend if you think the ride is too mushy, go for higher performance
tires and up the tire pressures. We have a Freestyle, and the Continental
Tires on the car are just OK. I certainly don't consider them performance
tires. If you are mostly trying to reduce the lean during hard cornering
(which I have not noticed in the Freestyle by the way), then thicker
anti-roll bars will help, but without some proper tuning you are just as
likely to reduce your ultimate cornering power as to increase it. A Five
Hundred is a tall vehicle and lean is a characteristic of taller vehicles.
Anti-roll bars reduce lean by transferring additional load to the outside
tire - which is already the more highly stressed tire in brisk cornering.
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