Yesterday, at 51,xxx miles, the driver's side front wheel bearing is dying a slow clickity clickity death. Went home from work and lifted the front end and did the 12/6 o'clock push-pull test, and there it was. A little play. Car went thru 3 seasons of auto-x, one trackday event, and the usual spirited driving.
So, yes, to those that are wondering, the bearings can die at relatively low miles.
Hopefully "SI Cover Gal" SubiGal can get my orders thru soon.