[Gumby]

Spring settle has less to do with the spring itself and more to do with the process of installation. The ends of the springs will settle very little; most springs are hardened to keep this to a minimum. Most of the settling comes from the spring finding its home in the mounts. I wuold wait a week or two; any misalignment that will destroy your tires in that length of time would likely make the car undriveable. Unless you are planning a 2000km road trip for Sunday, I would wait and just pay close attention to how the car acts while turning, accellerating and braking.

peace