Mario Kart Wii/Karts and bikes

For the first time in the Mario Kart series, you've got a choice between two types of vehicles. As with the characters, the karts and bikes fall into three weight classes, which affect how the vehicle handles and how it reacts following collisions or impacts.

Heavier bikes and karts will be affected less by impacts from other racers and have higher top speeds than their lighter counterparts, but the smaller vehicles will accelerate faster following collisions or weapon impacts and have sharper handling.