"What is the reason for filling the tire with air?"

Tires are filled with air for several reasons:

Support weight: Tires are filled with air to support the weight of the vehicle and its occupants. The air pressure inside the tire helps distribute the weight of the vehicle evenly across the tire's surface, allowing for proper handling and stability while driving.

Absorb shock: Air-filled tires act as shock absorbers, helping to cushion the vehicle from bumps and other road irregularities. Without air, tires would not be able to absorb shocks and vibrations, making for a much rougher ride.

Maintain shape: Air pressure also helps maintain the shape of the tire. This is important for proper steering, handling, and braking. If a tire is underinflated, it can become distorted and cause uneven wear, leading to reduced performance and safety issues.

Heat dissipation: The air inside the tire also helps to dissipate heat generated by friction between the tire and the road. This helps prevent the tire from overheating and failing prematurely.

Overall, filling tires with air is essential for safe and efficient operation of a vehicle. It is important to regularly check and maintain proper tire pressure to ensure optimal performance and safety.