sdwyzs14 wrote:iirc when you lower a car, the rear gains toe, so having adjustable rear toe rods allows you to dial in the proper amount of rear toe at a lower ride hight.
i could be wrong though
not way off, on the REAR, its kind of a snowball effect. You lower the car then you see, "oh i have too much negative camber". So you buy adjustable upper arms (rear), then fixing the camber throws the toe out of whack and you need adjustable toe.But, everything can be dialed in relatively closely with stock suspension parts.