The number of wheels on a plane differs depending on the size and type of plane. A Boeing 747 for example has 18 wheels. There are 16 main landing-gear wheels and two nose landing-gear wheels.
Most planes have the same configuration of wheels even if they have a different number of them. Conventional landing gear dictates that there will be wheels under each wing and one under the nose or sometimes tail for stabilization. Landing gear is one of the most important parts of the plane as landing accidents account for between 30 and 40 percent of all accidents depending on the type of aircraft.