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The air pressure inflates the tire and holds it away from the rim.

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Q: How do bike tires use air under pressure?
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Related questions

When you ride a bike friction between the tires and the road heats the air in the tires What does this do to the pressure in the tires?

Air expands when heated so therefor increases the preasure


How does low air pressure in bike tires reduce the efficiency of a bike?

low tires cause drag and it takes more to push these tires down the road. most bikes run about 40psi.


What is regulator gauge?

It is an object that measures the air pressure of things such as bike tires, helium balloons, etc.


What might happen to a person riding a bike if the air pressure in the two tires is not the same?

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


How does tires pumps use air under pressure?

Any tire pump uses compressed air


Is the air pressure the same in bicycle tires and car tires and why would it be different?

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.


Why some air escapes from tires when you fill air in tires?

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.


Why do bicycle tires need to be pumped up to higher pressure than car tires?

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.


When you ride a bike friction between tires and road heats the tires and air inside them how does this change the air pressure?

If all other things remain the same, a higher temperature means a higher pressure. For bicycle riding, the difference isn't enough to matter.


How does air pressure in tires affect the distance one can coast on a bike?

Generally speaking the higher the tire presure the lower the rolling resistance becomes.


How often do you need to check the air pressure in your car tires?

Owner's manuals usually recommend to check the tires' air pressure weekly.


How air tightness is achieved in tubeless tires?

air pressure