From the beginning to 2002 we used the 8'' Castor skyway wheels simply because they where easy to use and came in the kit of parts. If I remember right you had to either buy wheels from Skyway or make you're own because of supplier restrictions most of those years.
In 2003 we made our own 6'' dual gum rubber wheels and they proved to be competitive to say the least!
In 2004 we used the Skyway 12.5'' Tuffwheels because they came in the kit of parts and yet where high enough to climb the platform.
In 2005 we used two different types of wheels. We made our own gum rubber Omni-wheels for the back of our robot and we purchased 8'' x 1.25'' pneumatic castors for the front.
