[cire]

Ive designed our 6wd the last 2 years for 1015, both were a success.

2006: center wheels were lowered slightly and had tread on it. Outer wheels did not have tread on it, but i cut groves into them using a soldering iron.

2007: Center wheels were treaded, and ever so slightly larger then the other 2 wheels, and outer wheels were just the kit 6" wheels.

Both worked real well for turning, because the outer wheels act sort of like omni wheels because they can slide along the carpet, however not so much that we are easily pushed arround. I think we have the perfect balance.