Metal Hubs for 8 inch pneumatic ?

[SciBorg Dave]

We would like to get stronger hubs for our pneumatic tires. The game is hard on robots and would like to make it as robust as possible before week 3.

[jwfoss]

It will take some work to adapt them but the hubs from MBS (http://shop.mbs.com/accessories-486/mountainboard-wheels.html) look pretty solid.
Additionally you could look for alternate mountain board companies.