There are roughly three types of bicycle tubes, each with its own characteristics, advantages, and disadvantages.

For those who are serious about performance, road bikes are the way to go, and since most road bikes use Presta valves, some might think that Presta is the best.

However, for everyday use, you need to consider various scenarios.

Based on my own experience, I'll share which type is actually the easiest to use.

There are 3 types of tubes (valves)

First, it's important to know that the part where you inflate the tire is called a "valve."

There are three types: American, English, and French.

The American type is common on mountain bikes and hybrid bikes.

You can inflate it with most pumps, but if you're not used to it, it might not feel secure and you might lack confidence.

It's easier to inflate with a compressor-style pump, like those found at bike shops or gas stations.

The English type is found on light bicycles, city bikes—in short, many bicycles like "mamachari" (utility bikes for mothers) use this type.

Most air pumps commonly sold in Japan are compatible with it.

Also known as the "Dunlop valve."

Since it was developed by Dunlop in England, this is its official name.

However, it is rarely used in England; the French type is more common there.

The French type is often used in road bikes.

Because it's narrow, it's lighter and better, but you can't inflate it with a regular pump.

You'll need an adapter.

Incidentally, its other name is "Presta."

Perspective other than lightness

If you're purely pursuing speed and performance, a road bike would be your only choice, and in most cases, that means opting for a tube with a Presta valve.

However, when considering long-distance rides, you also need to think about the risk of a flat tire.

General bike shops and home centers typically don't stock these tubes.

Upon checking with a shop, I found that they could order it for me.

What this means is that if you get a flat tire while on a long-distance ride, you won't be able to simply buy and replace the tube.

It would be convenient if there were a bike shop to fix it, but often during such trips, there aren't any bike shops around, so it's crucial to be well-prepared beforehand.

When looking for an air pump, most available ones for borrowing are the English type (the most common type).

If you bring your own, you need to choose one with attachments that are compatible with your bicycle.

You only need attachments that fit your specific bike, so there's no need to carry all of them.

It is better not to replace tubes with other types

Presta valves can withstand high pressure, so they are indeed suitable for road bikes.

However, considering convenience, the English type offers greater versatility.

So, is it possible to swap a Presta valve tube for an English type? While technically feasible, it's not highly recommended.

The diameter of the hole in the rim is determined by the intended tube and valve.

Based on my research, the American valve is φ8.8mm, the English valve is φ8.2mm, and the French valve is the thinnest at φ6.3mm.

There don't seem to be any international standards, and the hole diameters vary slightly by company, but the order remains the same: French < English < American.

The thicker American valve, with a diameter of about 8.5mm, will not fit into a French valve hole.

Conversely, an American rim hole is nearly 9mm, so a French valve (about 6mm in diameter) leaves a gap and doesn't feel right.

I haven't tried it, so I can't say for sure, but unexpected problems could arise.

Incidentally, when inserting a thin French valve into a larger English rim hole, there are "universal valve nuts" available to fill the gap.

A quick search on Amazon shows them priced around 200 to 500 yen each, so you can use these parts to prevent issues beforehand.

The English and American valves have nearly identical outer diameters, so there's not much need to worry about that.

The difference is that the English type is threaded, while the American type is a pipe.

I've tried this myself, and changing from an American to an English valve caused no problems whatsoever.

Beware of valve displacement with American valves

English and French valves are secured at the base with a nut.

Therefore, even if the tube shifts, the valve will not become crooked.

On the other hand, American valves have a pipe-shaped base and are not secured with a nut.

Consequently, as the tube shifts, the valve may gradually tilt.

A slight tilt is usually not a problem, but if it tilts beyond a certain point, the base of the valve can get damaged and break.

It's recommended to regularly check the air pressure to prevent shifting, and if it does shift, even if it's a hassle, remove the tire and realign the tube.