Some of the combat robots at Robogames tried out those new Banebots wheels.
They wear down incredibly fast. And the floor at robogames is only plate steel.
The treads are deceptivley thin, they will wear down much faster than you may think (especially the Shore A variety).
They will also turn black and lose that awesome orange color...
If you want to use cheap plastic wheels, the colsons are the way to go. For FIRST or for combat.