The Subaru WRX STi and understeer are two words commonly found in the same sentence and constitute an issue that aftermarket enthusiasts and the everyday driver look to fix the moment they purchase the vehicle. A multitude of options have been tried and have been proven to work, some of which are free, while others require alteration of the vehicle's factory settings and equipment, ranging from wider and lighter wheels to aftermarket sway bars. Each adjustment will have different effects, so it is ultimately up to the owner's preferences as to which settings work best for you.
Increase the tire pressure in increments of 2.5 psi for the front, while reducing by the same amount for the rear.
Install wider or lighter wheels in the front, while installing narrower or heavier wheels in the rear.
Align the vehicle in such a manner that the front has more negative camber, more toe-out and more positive caster, while the rear should have more positive camber, along with more toe-out.
Install sway bars, and for the front, soften, while for the rear, stiffen.
Install springs with a softer spring rate in the front, and for the rear, go with a stiffer spring rate.
Install aftermarket shock absorbers with softer dampening in the front, while maintaining a stiffer setting in the rear.
Install aftermarket suspension bushings, with softer bushings in the front and stiffer in the rear.
