You could probably run the aluminum wheels and 3 bolt hubs for around $80 if you shop it out...and not have any troubles. However as mentioned earlier, I have a buddy locally that ran the mower wheels with bearings because he had them. But literally every race day it would destroy 2 or 3 bearings. That adds up after a seasons worth of bearing buying, and that's if ya get lucky and don't tear up a wheel or so in the process.