Super Mirco (Age 3-6)
7.25 x 27, 10.5 Inch Wheelbase
Micro (Age 4-8)
47.5 x 28.25, 11.25 Inch Wheelbase
Mini (Age 6-10)
7.75 x 30, 13 Inch Wheelbase
Mid (Age 8-12)
7.8 x 31, 13.5 Inch Wheelbase
Full (Age 10-14)
8 x 31.25, 13.75 Inch Wheelbase
Large (Age 14-16+)
8.25 x 31.5, 14 Inch Wheelbase