[Icey1174]

The rear wheel bearing are pretty heavy duty if you ask me and they are pressed into the arm. I think once they are replaced you will be good for a very long time, if not forever.

Get a new set of tires and keep them properly inflated. You should not have problems with your sidewalls unless you are low on air or beat them on curbs. If you are racing you might want a better tire for the track.