Dozernut. It would probably be the same as having the tires on if the distance from the axle center to the ground is the same radius as it would be with the tires on it...
My question is there significant traction? /forums/images/graemlins/grin.gif
No really, my question is there more steering resistance? Only if your not moving I suppose... /forums/images/graemlins/cool.gif