The air pressure inflates the tire and holds it away from the rim.
Air expands when heated so therefor increases the preasure
low tires cause drag and it takes more to push these tires down the road. most bikes run about 40psi.
It is an object that measures the air pressure of things such as bike tires, helium balloons, etc.
what might happen is that the bike will fall over because the bike is not equal air pressure so it will till or fall over because one side has to much air and the other one does
Any tire pump uses compressed air
It is not the same, as car tires contain much greater volumes of air. The same amount of air that would raise the pressure slightly on a car tire could over-inflate a bike tire. Motorcycle tires typically fall in the middle of these tire sizes. A car tire contains a greater VOLUME of air at a lower PRESSURE. A bicycle tire has a lesser VOLUME of air at a GREATER PRESSURE. Some bicycle tires can be inflated to well over 90 PSI. The tires on my touring bike are inflated to 75 PSI. That's WELL over what should be in most passenger car tires. Some things to remember: When looking for the correct tire pressure for an automobile DO NOT go by what's printed on the tire, that is the MAXIMUM PRESSURE FOR MAXIMUM LOAD! YOU CAN CAUSE A BLOW-OUT BY INFLATING YOUR CAR TIRES INCORRECTLY! There is usually a sticker on the driver's side door jamb that tells what the pressure should be. OR CHECK THE OWNERS MANUAL Be sure to CHECK THE PRESSURE WHEN THE TIRE IS COLD! Oddly enough the CORRECT pressure, or range of pressures, is printed on the side wall of most all bike tires. It's important to check for the correct tire pressure on your bike to avoid "pinch" flats and to protect the rims and tires. It's normal for both car and bike tires to lose pressure if they are left standing for any time.
If air is escaping from your tires then you have a leak. Repair the leak and no more air will escape. This is not to say you never have to check the air pressure. Tires are made from a porous material and as such will loose a very small amount of air even under the best of circumstances. Check the pressure on a regular basis.
Car tires have very stiff sidewalls, that can carry some of the load. Bike tires are flimsy and have to do it all by air pressure. Besides, om a bike, with the power restrictions of its human engine, it becomes more important to keep the rolling resistance down as much as possible.
If all other things remain the same, a higher temperature means a higher pressure. For bicycle riding, the difference isn't enough to matter.
Generally speaking the higher the tire presure the lower the rolling resistance becomes.
Owner's manuals usually recommend to check the tires' air pressure weekly.
air pressure