The center of a tire is called the rim, its what holds the air inside and the car standing ;D
psi
Compresion
A tool that measures air pressure in a tire or going through a pipe is called an air pressure gauge.
Most tires are supported by air pressure alone, not the tire, the tire controls things but is a casing to hold the air that hold the car up. There are tires called run flat that can work with out air pressure for a little while. In history there were solid rubber tires that did not require air at all, they were terrible.
Air rushes out because it is under pressure. Once there is no longer any pressure in the tire the air will stop flowing out. However there is still air in the tire it is just equal to the pressure outside.
When it is needed.The tire inflates when air is pumped in
Air leaves a tire when the valve is opened due to the pressure difference. Since the tire has more pressure than the air outside, the tire air will escape until the pressure equalizes.
Yes there most certainty is a limit to the amount of air that can be pumped into a bicycle tire. Put too much air in the tire and it will explode. The maximum air pressure for the tire is listed on the sidewall of the tire.
Air leaves a tire when the tire valve is open due to the pressure. The pressure outside of the tire is lower than the pressure inside the tire.
In short, yes the air does rotate. You're wondering if one molecule of air at the top of the inside of the tire will stay stationary when the tire is moving, basically. Because of the high PSI in a tire, the air molecules are packed together and do not have anywhere to go. When the tire spins, the air doesn't have anywhere else to go, so it starts spinning with the tire.
Air pressure is a measure of how much air is in a tire, or how much it is inflated. Air pressures are written on apanel on driver door frame and on tire sidewall. they are very important to tire wear.