Well, that depends on the specific type of bus. Smaller buses may have four wheels. Six wheels is pretty common for buses. Some may have eight or ten wheels, depending on the vehicle's gross weight rating.
Yes
To make them go faster
because the wheels are broard
Because they carry a large load and it has to be spread among many tires.
the wheels are used for pumping and used on cars, motorcycles,trains,buses, and at farms too
Weight distribution.
Unless levitation or anti gravity is perfected in the next few years, yes buses will still have wheels.
Most school buses have two axles and four wheels or four sets of wheels. i.e. one wheel in each front corner and a pair of wheels on each side in the rear. See this link http://piccies.flybywire.org.uk/General/2005/20050317/SchoolBus.jpg
wheels are used everyday. Cars, bikes, buses, planes and trains. Many forms of transport rely on the wheel. Shopping trollies, trucks, forklifts. Wheels allow heavy weights to roll easily and move.
no there are busses which float like in london. and offcourse airbus lol.
so that pressure will decrease and road will not sink