A bicycle with square wheels would not work at all.
Wheels are round now and have always been round.
--G-c-ccc-e-g-e-c--- The wheels on the bus go round and round d-B-G---g-e-c- Round and round, round and round G-c-ccc-e-g-e-c--- The wheels on the bus go round and round d---G--Gc--- All through the town.
they are round
all of them are round
Wheels Go Round - 2014 was released on: USA: 1 December 2014 (limited)
Actually there are lots of vehicles which do not have round wheels. A sled has runners (runners are essentially large skis). A military tank runs on caterpillar treads. Various forms of air travel do not require wheels (although some do use landing wheels). Boats do not require wheels (although they may have steering wheels). And so forth. If you are asking why wheels are round instead of some other shape, round wheels roll more easily than any other shape.
Not deliberately. But historically, it was difficult to form perfectly round wheels.
the wheels go round and round up and down side to side very flexible easy to use
Lots of cheeses are made into "wheels". It describes the large round shape they are made into.
round wheels, probably metal. KV
The wheels on tHe bus go round and round
when you pedal, they go round?!?