Depends on the pump. Some small handpumps have a reversible front/insert to the nozzle. Others have a "double-barrel" nozzle in which case you simply use the appropriate one, Others aren't meant to be changed over. If that's the case it's often possible to replace the pump head (or head + hose) with one meant for Presta.
Pretty much the same way you change any other bicycle tire. I'll post a link that describes how.
If you're trying to find out if you can install a presta valve inner tube into a rim that previously used the schraeder type valve.....you can but you'll have a small gap around the hole. Problem Solvers is one of the companies that make a type of shim to eliminate that gap so the valve stays upright.
On the other hand, if you want to do the reverse, change the tube type from Presta to schraeder? You can if you drill out the rim with a 5/8" bit, then file the hole so it's smooth. This won't work on a rim that has a high center or a peak in the middle of the rim. The hole area has to be flat if you want to drill.
A Presta Tire would be a tubular tire with a Presta valve. A Presta tube would be more common, and is an inner tube with a Presta valve. Presta is a typ of valve used for bicycles that is a bit narrower and needs to be opened and shut manually when inflating/deflating.
The type of nozzle you need isn't determined by the tire, but by the tube. And you can put any kind of tube in any tire. You need to look at the tube to determine if it's a Schrader (like on a car), a Presta(narrower) or a Dunlop (unlikely). Schrader-to-Presta adapters are available at pretty much every bike store and only cost a few dollars.
It takes very little skill or effort to change a bike tire. Anyone who rides a bike should be able to do it.
Pretty much the same way you change any other bicycle tire. I'll post a link that tells you how.
No, inflating a bike tire is a physical change because it does not change the chemical composition of the tire or the air being pumped into it. When air is added to the tire, it simply increases in volume and pressure without altering its chemical properties.
hump it
pull the outer part of the tire off pull off the deflated bike tube replace it with a new bike tube put the outer part of the tire on
You need one that match your tire size and your type of valve. The tire size is written on the tire sidewall. Doesn't have to be a perfect match in width, but the right diameter is fairly important. If the valve is the same type as on a car tire, then look for a tube with a "Schrader" valve. If it's a narrow thing, it's probably a "presta" valve.
In order to find the proper replacement for your bike tire you need to measure the wheel and determine which type of tire your bike uses. You can also take it to a bike repair shop and they can help you pick out a replacement tire.
That's all down to the type of valve that's in the tube in the tire. There's schraeder, which is the same kind that's on a car tire, and there is Presta, which is far narrower and doesn't look the same at all. First identify the type of valve, then go looking for a suitable pump, or a pump with the right adaptor.
You can find a bike tire by visiting a local bike shop or even a retail store like Walmart.
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