What kind of wheels should you use for a Derby car?

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The types of wheels used on soap box derby cars have changed significantly since the first racers coasted down that hill in Ohio in 1934. Buying the appropriate wheels for your soap box car will result in more stable handling and steering, not to mention an improvement in aerodynamics.

* http://www.ehow.com/how_2082557_buy-wheels-soap-box-car.htmlIf you are building an official racer, which will be used for an authorized Soap Box Derby race, your wheels will need to follow strict specifications. As there is a limit on size, shape and construction of an official racer, there is a demand that the wheels be officially approved Z-Glas wheels. However, if you are building a racer for fun, or if you want to start at an amateur level and get in some practice before going for the big time, any wheels will do. But some are better than others, and if you're serious about going for the big time, you'll want to get the best wheels you can for your practice sessions.

* http://www.essortment.com/home/soapboxderbyc_sfwk.htm