how much air is in the tire
When you are not sitting on it.
Depends on the type of bike. A skinny tire road bicycle will have several times higher pressure than a tractor tire, while a wide tire Mountainbike can have anything between the double to 1/3 of the pressure of a tra tire.
Because the air inside the tire is under pressure. Gas always flows from a region of higher pressure to a region of lower pressure. As the pressure inside the tire is greater than the pressure outside, the air always comes out of the bicycle tyre.
ANY tire gauge measures air pressure in PSI.
The inflation pressure is on the sidewall of the tire.
A bicycle tire is a tire which fits on the wheel of a bicycle or similar vehicle.
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.
A "solid rubber bicycle" wouldn't be particularly useful, so I assume that you actually mean a comparison between a solid and an inflated bicycle tire. Answer: It depends. An inflated tire of a very high pressure will compress less than a solid tyre made out of soft rubber. OTOH a hard rubber solid tyre will compress less than a low-pressure inflatable tyre.
Depends on the type of bike. A skinny tire road bicycle will have several times higher pressure than a car tire, while a wide tire Mountainbike can have anything between the double to 1/3 of the pressure of a car tire.
Air is put in with a pump or a compressor, either way it becomes pressurised to inflate the tire.
If the tyre is inflated, yes. If it has been completely deflated, no.
Low tire pressure or failed tire pressure sensor.Low tire pressure or failed tire pressure sensor.