Light Weights
Easily knocked away by heavy weights, but can counter it with their great acceleration. These are the best for off-road shortcuts!

Toad
Special:Acceleration
Peach
Special:Light Weight
Yoshi
Special:Off-road

Middle Weights
Balanced between the light and heavy weights, a great choies for those alternative tracks.
Mario
Special:Balanced
Luigi
Special:Steering

Heavy Weights
No one gets in the way of these guys! Heavy weights can knock off light drivers like dust. They have a big top speed, but it takes time to get there! Becareful with these guys on the terrain, they will drop down speed in a second.

Wario
Special:Power
Bowser
Special:Top Speed
Donkey Kong
Special:Balanced Heavy Weight