I busted a stock Neon hub after a season of circle tracking, followed by a season of ice racing on bolts. It never came all the way apart, I thought I'd killed a clutch or CV at first. The (*searching for proper terms now) flat portion of the hub that has the bolt circle cracked away from the center of the hub. It is still in place, but will rotate quite easily. I kept it as a souvenier of an odd failure. Or maybe a lucky failure- I quit driving before the wheel exited the chassis in an ever so exciting manner.

IIRC, Mopar performance catalogue says you are to change the ACR hubs and bearings every 12 track hours.