Question

why are tyres filled with air? which property of air is this?

Answer 1

Answer:

inflated wheels at 4 atmospheres guarantee that the wheels are more rigid and the ride is smoother.

This advantage becomes more important at higher speeds because the wheel could get deformed many times a second at higher speeds. And it becomes more important for greater vehicles (relatively to toys) because their mass grows as R3 with the radius R while the area of the wheel is expected to grow as R2 only. So the pressure – force per unit area of wheels – becomes greater for greater vehicles. Not an issue for toys but large vehicles need to have wheels that are resilient under much higher pressures.

On the contrary, the need for high pressure in the wheels decreases if the area of the wheels is large (the wheels are "wide") and if the car is relatively light. So formula one cars only use about 1 atmospheres in the wheels. Also, mountain bikes (thick wheels, bumpy roads, expected low speeds) often have 2 atmospheres only while racing bikes (thin wheels, smooth roads, expected high speeds) may be pumped to 15 atmospheres.

Answer 2

Explanation:

here's your answer follow me please