All the time, its so the car drives smoothly and it is comfortable for the passengers. If it was a hard material the tires would ware down or break.
a balloon, a tires, as you said, we actually use air to breath too.
air
There are no 'types' of air. Air is all just air. - Some people do use nitrogen in tires - that is not air.
Airless tires are tires which are not pumped up with air in the traditional way. Vehicles such as ride-on lawnmowers and golf buggies use airless tires.
No -- Keep the same recommended air pressure in your tires at all times, but check and add air when the tires are cool and have not been running. Use a tire pressure gauge.
they are filled up with regular air that our tires use but some cheaters in monster truck racing fill their tires up with water to make sure they land on all fours.
Most people use nitrogen to inflate jet plane tires.
Yes, you can use nitrogen or plain air.
It is good to fill the tires of your car.
Any tire pump uses compressed air
The air pressure inflates the tire and holds it away from the rim.
The tires go flat. The tires lose air even if they don't have any defects or holes, the air goes right through the rubber by osmosis. For applications where tire pressure is critical they use nitrogen to inflate them. One of the amazing things about air in tires is that different gasses depart the tires with different speeds. Probably a good science project in this.