How many inches is the wheel of an adult bicycle

Relationship with growth

For very young cyclists, wheel and frame size is critical. While the baby is not very well oriented in space, the bicycle poses an increased danger to his health. Therefore, the wheels and frame are selected in such a way that the child’s leg, which is freely lowered down, reaches the ground. Hence the choice of small wheels. As for folding bicycles, the main requirement for them is small dimensions. A diameter of 20 inches is optimal for this.

As the child grows, so does the size of the bike. this is how teenage bicycles with 24-inch wheels appeared. And even after reaching an average height, you can select models with large wheels, which allow you to ride with comfort and gain high speed if necessary.

For leisurely walks, 26-inch wheels are good, this size is great for transporting a bike. However, it does not take up much space. If speed is important, the 27-inch size is more suitable. These rim dimensions are typical for road bikes. You can also navigate which bike is suitable by the frame.

29 ” wheels are ideal for people with a height of 180 cm and above.

A video showing the difference between 26 and 29 wheels using the example of overcoming pits and obstacles:

Here are some figures for the most popular models, more precisely, the size of the frames and their ratio to the height of the cyclist:

  • Height 190 cm (and more). road 50-52, road 46-48, mountain 41-44.
  • Height 180 cm. road 57-59, road. 56-58, mountain. 48-50.
  • Height 170 cm. road bikes 53-55, road bikes 50-52 and mountain bikes 44-46.

So everything is interconnected. rim diameter, frame size and rider height. Of course, these are not strict rules, but only a recommendation and hint when buying a bicycle. There are more accurate tables, which take into account not only height, but also the length of the legs. However, this is more true for athletes performing tricks or setting speed records. The average two-wheeler will have enough of the above tips and the ability to adjust the saddle and handlebar heights.

Maybe someone else will need to buy a stem, but, in any case, first you need to understand exactly for what purpose the bike will be bought. From folding models, no one will expect an ideal fit or speed characteristics, and almost all cruiser models are designed only for leisurely defiles on flat paths. Tires play a huge role in the “size” of wheels for a bicycle.

Models familiar to all with their characteristic frame shape and dimensions acquire a completely different look with a change in tire dimensions. An example of this is the emergence of a fat bike. The usual bike, “changed” into wide tires, set on suitable rims, is absolutely transformed. It was not only the appearance that was transformed. the controls, the dynamics of acceleration and much more were completely changed. So it is with standard wheel sizes. It is enough to put “slicks” instead of aggressive rubber. acceleration becomes noticeably easier and less effort is required to maintain a constant speed.

Reference: Slick, slick. (slick) type of tires without a raised tread, which reduces the grip area with the road surface.

What wheel diameter to choose for an adult bike. Varieties of tires

At the first choice, a beginner cyclist may have a completely natural question. what diameter of the bicycle wheels to choose. We will try to help you with this.

In this article, we will not touch on the issue of selecting frame sizes, their classification should already be clear to you after reading the article “How to choose the right size of a bicycle frame”, we will focus solely on the diameter of the wheels.

So, the vast majority of bicycles have the following wheel sizes:

  • 20 inches. Used primarily in children’s bicycles. Exceptions are folding and stunt BMX bikes.
  • 24 inches. Basic wheel size for teenage bicycles. Also widely used in adult folding bikes and some freeride bikes.
  • 26 inches. Currently, the most common wheel diameter. Used in both urban walking bikes and entry-level mountain bikes. Essentially a universal size.
  • 27 inches. Here we are talking about a traditional road bike with thin tires.
  • 27.5 inches. A relatively new wheel diameter that is currently heavily used in mountain bikes and represents a compromise between 26 and 29 wheels.
  • 28 inches. Wheels for city bikes as well as hybrid models that can be used for riding on country roads.
  • 29 inches. For the so-called niners, they are mountain bikes with large wheels. They boast good coasting and high cross-country ability.

It is worth paying attention to the fact that the size of the wheel diameter alone will not be able to provide you with the desired speed or cross-country ability on various types of terrain. Much will also depend on the type of tread on the bicycle tire fitted to that wheel.

The protector is as follows:

  • Slick. Thin tires without or with a weakly pronounced pattern on the rubber. Provides fast driving on level and clean road surfaces. Installed on city and road bikes. Minimal resistance to a flat surface allows you to quickly pick up and maintain speed. Not recommended for use on wet, muddy or uneven roads.
  • Half-slickers. A universal tread with small teeth in the middle and more massive at the edges, which allows you to maintain a fast and quiet ride in straight-line driving, and to ensure better grip when cornering and on wet surfaces. Used primarily in hybrid and city road bikes.
  • Mud. Tires with a pronounced tread pattern across the entire surface. Provides reliable contact with almost any surface due to aggressive medium to large teeth. Used in mountain bikes in a wide variety of variations. On a flat surface, they slightly slow down the speed of the bike and make a characteristic noise when riding.

A few general points:

  • Small diameter wheels accelerate faster and easier, but harder to maintain high speed.
  • It will take more effort and energy to turn the large diameter wheels at the start, but after acceleration it will be easier to maintain the maximum speed.
  • When traveling long distances, it is better to use larger diameter wheels.
  • If during cycling you have to make frequent stops or move mainly at a low speed, then it is better to choose wheels with a smaller diameter.
  • Wheels of large diameter and with a wide tread pattern well soften various pits and irregularities on the road, make it easier to overcome low curbs.
  • For tricks and jumps, it is better to use the small diameter of the wheels.
  • Diameter 29, when choosing a mountain bike, it is better to use people with tall stature, for other cases, pay attention to diameter 27.5 and 26.
  • Do you move a lot exclusively in the city and on flat surfaces? Take a look at city and hybrid bikes with 28 diameter.
  • Do you need compactness? Choose a folding bike with 24 or 20 wheels.

How to determine the diameter of a bicycle wheel

From time to time the question arises: “What is the diameter of the wheels of the bicycle?”

Most often, it pops up in case a tire has broken through or new rubber is needed on the wheel of an old bicycle. And to the seller’s question “What wheel does your bike have?” only one answer comes to mind: “round”.

First of all, you need to decide on the concept of wheel diameter.

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For most ordinary people, this is the diameter of the wheel along the outer (outer) border of the tire.

But there is also the concept of the landing size of the rim. this is the diameter of the rim itself or the tire along the inner border.

For the sake of brevity, here is a figure with an explanation of what is measured in each labeling system. Therefore, it is important to understand what we are measuring and what we want to find.

So, the methods for determining the diameter of a bicycle wheel in inches and millimeters:

  • The simplest and most reliable. An old tire installed on a bicycle should have its diameter in inches or millimeters written.

When choosing a new rubber, be guided by it. If there is no tire with exactly the same marking, look at the interchangeability table and select the correct size in another marking.

If you need a new tire a little wider or narrower. check the tire and rim width chart.

If in doubt, talk to the seller. He will tell you if it is suitable for you, both in terms of size and in terms of tread, driving style and what roads you want to ride.

  • See if the rim size is written on it. Sometimes manufacturers write the size in the ETRTO system in mm: landing diameter and width. Depending on this, the size of the tire is selected. What dimensions in inches are suitable for your rim size in mm can be found in this table.
  • If nothing is written on the rim and, most importantly, the tire, then you will have to calculate its diameter “manually”.
  • This can be done by measuring the radius and multiplying it by two.

    For younger students reading this article, I remind you that one diameter consists of two radii.

    Only you need to measure strictly from the center of the sleeve, and not from its edges. When measuring, the bicycle should stand upright, and the tape measure, putting one end to the ground, keep the same strictly vertically, and not along the spokes of the wheel. Only such a measurement will give the correct value.

    In the same way, you can immediately measure the diameter of the wheel itself. The main thing is to accurately determine its upper cut. To do this, you can take a level and attach it to the top of the tire, and, holding it strictly horizontally, determine the desired size using a tape measure.

    After that, we translate it from mm to inches. To do this, divide it by 25.4 (1 inch = 25.4 mm) and calculate the size in inches. The result can be rounded to standard inch wheel sizes.

    For example, if your measurements are 720 mm, divide by 25.4 to get 28.346 inches. So, most likely, the real wheel size, taking into account the accuracy of calculations, is 28 “.

    In principle, the rim diameter can be measured in the same way.

    Wheel Sizes Explained | Kids Bikes, Mountain Bikes, & Unicycles

    Just pay attention to the difference between what is measured with a tape measure on the outside and the landing size of the rim.

    For those who are not looking for easy ways in life, you can calculate the diameter of a wheel through its circumference. How to calculate the circumference of a bicycle wheel is described on our website in a separate article (Second method).

    And knowing it, it is easy to calculate the diameter. To do this, the circumference in millimeters must be divided by the number “Pi” (3.14). Once you get the diameter in mm, divide it by 25.4 to get the diameter in inches. Similar to the previous paragraph, the result will have to be rounded to the nearest whole number in inches. The more accurate all measurements are, the more accurate the result and less rounding.

    Bicycle wheel diameter

    Bicycle wheel size and features

    With the onset of the season, the streets are filled with cyclists. toddlers on bicycles with side wheels, their dads and moms on the mountain. The wheels are small, huge, wide and narrow. how not to get lost in this sea of ​​spokes and sizes?

    The easiest way is to systematize this variety in a summary table of sizes:

    And it immediately becomes clear what the size of the bicycle wheels depends on. For example, from the driver’s height or how the bike is positioned.

    Bicycle wheel diameter. how many inches to choose.

    Hello everyone, I am very glad to see you on the PRO-bike blog. Today I want to talk about the choice of the diameter of the bicycle wheels. How wheel size affects ride comfort and efficiency.

    The wheel is one of the main parts of a bicycle, without a wheel it is impossible to imagine movement. The wheel and hub (axle) of the bicycle reduce the effort expended during movement by a factor of ten.

    Let’s imagine a load weighing 100 kg (an adult and a bicycle luggage). A cyclist, when trying to move (drag, i.e. the wheels are locked), such a load will require about 600 N (Newton) of force or the equivalent of 60 kg of mass (if lifted) with a wheel diameter of 1 meter. However, if the wheels are unlocked, the cyclist will only need about 18 N of effort or the equivalent of 1.8 kg (if lifted). The difference is enormous. The wheel is your circular lever that lightens the effort when driving.

    Now let’s compare how the bike’s functionality changes when the wheel diameter changes. For comparison, let’s take a large wheel. 29 inches and a small one. 24 inches:

    The larger the diameter of the wheels, the larger the contact area with the surface (provided the tire is the same width), the better the permeability on sand, mud, snow and other dirt road.

    Wheels with a large diameter are easier to overcome obstacles, since the angle of “arrival” of the wheel on any object is reduced.

    Wheels with a smaller radius are more durable and less prone to the appearance of the “eight”. Of course, this feature must be supported by the presence of the correct spokes and a good rim.

    Large wheels easily and comfortably drive over small irregularities (roots, stones, small holes), but do not perform well if there are large potholes along the way. Wheels with a smaller radius smoothly roll in large holes, but on small irregularities, the ride may seem like you are driving on a washboard.

    Small wheels are easier to spin (acceleration at the start), but on long journeys, wheels with a larger diameter will take you to your destination faster, more comfortably and with less effort.

    Less wheel diameter means less weight on the bike. Large diameter bicycles are heavier because they are a little more frame, fork, etc. go into the bargain. Balance needed!

    Sometimes cyclists, fans of downhill skiing, urban freeriding, dropping and similar styles experiment with combining wheels of different diameters. The front is 26 “and the rear wheel is 24”.

    Teenage and Folding bicycles with 20 “and 24” diameters

    Everyone chooses for himself the diameter of the wheel, depending on what type of riding you plan to use the bike for.

    Do you need a bike? Highlights on bike selection modules have been covered in related articles:

    How to choose the right bike frame size for your height?

    And now we come to the main reason for the discomfort on the bike. the size of the frame.

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    The wrong size of the bike leads to excessive fatigue of the muscles of the back, knee joints, arms and neck muscles.

    Naturally, such trips will not bring you much pleasure.

    Every modern bike has its own size. Often, one and the same model is produced in several frame sizes, which means that there should not be any problems with choosing a bike for your height.

    Get on your bike, grab the wheel.

    The arms should be slightly bent at the elbows. You should not reach for the steering wheel, and when cornering, your hands should not lose the steering wheel.

    If it is a mountain bike or sports bike, then the landing should be slightly tilted on the handlebars; the load is evenly distributed over the back and arms.

    On road and city bikes, the seating position is usually with a straight back.

    Very important: sitting on a seat and putting your foot on the pedal in the lower position. the leg should be almost straight, this will save your knee joints from unnecessary stress.

    Stand forward from the saddle. For safety, there should be a gap of 5-10 cm between the inner thigh and the upper tube.

    Use this table and you can easily determine which bike frame size you need.

    Choosing a bike size according to your height

    Frame size, inchesYour height, cmFrame size, cmConditional valueDesignationthirteen”130-14533XS (XSmall)Minimum14″135-15535.6XS (XSmall)Minimum15″145-16038.1S (Small)Small16″150-16040.6S (Small)Small17 “156-17043.2M (Medium)Middleeighteen”167-17845.7M (Medium)Middle19″172-18548.3L (Large)Large20″178-19050.8L (Large)Large21 “182-19553.3XL (XLarge)Very big22 “195-21053.9XL (XLarge)Very big

    Bicycle wheel size selection

    The size of the wheels of the bicycle determines its overall clearance (the height of the bicycle), and also affects the maneuverability, handling and roll of the bicycle.

    Recently, bicycles with 29 “and 27.5” wheels have become quite popular. as a rule, such bicycles belong to the “mountain bike” class (mountain bike).

    It is no secret that the larger the wheel of a bicycle, the larger it becomes, and therefore less maneuverable compared to other bicycles, but this does not mean that such bicycles are poorly controlled. But such bicycles ride better. they roll smoother and more confident, well, the speed will be higher.

    26 “wheels are still considered the standard for an adult bicycle, but city, road bikes and hybrids usually have a base with 28″ wheels.

    How to choose the right adult bike

    And so, now we are faced with the question of choosing the right adult bike.

    How to choose the right bike for yourself, where to start?

    The first step is to decide which type of bike you prefer:

    • City bike. for driving along city streets and bike paths
    • Road bike. for fast riding on asphalt roads
    • Mountain bike for riding on rough terrain and bumpy roads
    • Or maybe even a hybrid, in which there is a little of all of the above types of bike

    If you have not decided yet, perhaps this article will help you make your choice: What are the bicycles

    Now that we have decided on the type of bike, we move on to the next, but no less important stage.

    Now that all the main selection criteria have been taken into account, you can safely go to our bicycle catalog to choose your new two-wheeled pet.

    We hope that this information was useful for you, and you will definitely find a bike that is perfect for you.

    Bicycle catalog

    Bicycle Wheel Selection. Size Chart

    The wheel is the most important part of the bike. When choosing it, you should rely on two parameters: weight and size. And if the weight is easy to determine. what is easier is better, then when choosing a size, the cyclist may be puzzled, because this characteristic directly depends on the scope of the bike. To simplify this task, experts have compiled tables with bicycle wheel sizes and implemented a traditional marking system. We will tell about them.

    Choice based on height

    When choosing a two-wheeled vehicle for children, it is very important to pay attention to the diameter of the wheels. The first bike of the baby should be so high that the leg lowered down reaches the surface. It will be much easier for the child to navigate in space while riding, he will not have the feeling that he will fall from a great height. Therefore, for greater safety and to avoid children’s fear of technology, wheels of a small diameter should be chosen.

    As you grow, so does the height of the bike. When a child learns to ride perfectly, you can pay attention to more functional models that have a wheel size of 24 inches. Later, when you reach an average height, you can choose a technique with a large tire and wheel size. This makes it possible to switch speed, overcome different sections of the track and achieve the necessary skills.

    The mode of transport is selected depending on the needs. There are the following types of bicycles: mountain, teenage, BMX, children’s, road, etc.

    How to determine the diameter of a bicycle wheel

    From time to time the question arises: “What is the diameter of the wheels of the bicycle?”

    Most often, it pops up in case a tire has broken through or new rubber is needed on the wheel of an old bicycle. And to the seller’s question “What wheel does your bike have?” only one answer comes to mind: “round”.

    First of all, you need to decide on the concept of wheel diameter.

    For most ordinary people, this is the diameter of the wheel along the outer (outer) border of the tire.

    But there is also the concept of the landing size of the rim. this is the diameter of the rim itself or the tire along the inner border.

    For the sake of brevity, here is a figure with an explanation of what is measured in each labeling system. Therefore, it is important to understand what we are measuring and what we want to find.

    Children bicycle

    In order for the child to ride comfortably and learn how to control transport faster, it is necessary to select the correct wheel parameters. The data in the table below allows you to understand which age is best for which size is best.

    Bicycle wheel radius

    Quantities, Units and Conventional Markings

    When determining the parameters of the wheel, the following values ​​are measured:

    • Outer wheel diameter;
    • Rim and tire widths.

    It is customary to use inches as the unit of measurement. However, albeit rarely, but you can still find markings in millimeters. The most common sizes: 20 ″, 24 ″, 26 ″, 27 ″, 27.5 ″, 28 ″ and 29 ″. these are the numbers traditionally indicated on the rims and indicate the diameter. Type marking diameter x width is indicated on the side of the rubber, for example 26×1.75.

    Important: in some cases, instead of a dot, they write the sign of the fraction 26×1¾, and although this is mathematically equal to 26×1.75, such tires are not interchangeable.

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    It is useful to know that the rim diameter is found in only five variations: 406, 507, 559, 584 and 622 millimeters. In this case, 622 mm is intended for 27 ″, 28 ″ and 29 ″ tires. The use of rims with a smaller bore diameter is not provided for them.

    Bicycle wheel diameter

    Many people when cycling do not attach much importance to self-service transport. Questions such as changing sprockets, lacing or repairing a tire are quite complicated in action, and there is a desire to learn a little more about the iron horse, and sometimes completely assemble a bicycle with your own hands. The latter option will make the transport as convenient as possible, the ride is comfortable and Honor has all the individual features.

    When choosing a bike, no matter what type and for what age category, you need to pay attention to the wheel diameter. This parameter is usually measured in English inches and is indicated on the side of the tire. For each category of two-wheeled vehicles, there are certain dimensional parameters. One important thing to remember: the diameter of a bicycle wheel depends on the diameter of the rim and the thickness of the bicycle tire. Thus, you can choose the optimal type of equipment that will be comfortable to ride.

    There are 7 of the most popular wheel sizes. For easy systematization, it is best to place the diameter types in the table. This will make the perception of data more convenient and correct. How to determine the size of a bicycle wheel?

    Wheels 27, 28 and 29 have the same rim parameters, the difference lies in the thickness of the tire. Size affects many qualities of a technique, but there is no definite opinion on this matter. Physically speaking, if the wheel size is large, then a long distance will be covered, but it will take a lot of effort. Thus, the acceleration time is increased. A bike with small wheels is easier to speed up than the opposite option.

    International Organization for Standardization (ISO) Marking

    To eliminate confusion with parameters, a universal ISO marking system has been developed. All manufacturers use it.

    This marking is based on two values:

    • Tire width (dm);
    • Width of the landing diameter of the landing rim (mm).

    When choosing a rubber, it is necessary to pay attention to the landing diameter: it must necessarily coincide with the original parameters of the bicycle rim. So, 29-622 29-622 tire is interchangeable with 27-622 road, despite the fact that their width is different.

    Bicycle wheel size and features

    With the onset of the season, the streets are filled with cyclists. babies on bicycles with side wheels, their dads and moms on the mountain. The wheels are small, huge, wide and narrow. how not to get lost in this sea of ​​spokes and sizes?

    The easiest way is to systematize this variety in a summary table of sizes:

    Wheel size (inches)Rim size (mm)Types of bicycles
    20406Baby, folding
    24507Stunt, teenage
    26559Mountain, walking
    27622Road
    27.5584Mountain
    28622Hybrid, road
    29622Niner

    And it immediately becomes clear what the size of the bicycle wheels depends on. For example, from the driver’s height or how the bike is positioned.

    Relationship with growth

    For very young cyclists, wheel and frame size is critical. While the baby is not very well oriented in space, the bicycle poses an increased danger to his health. Therefore, the wheels and frame are selected in such a way that the child’s leg, which is freely lowered down, reaches the ground. Hence the choice of small wheels. As for folding bicycles, the main requirement for them is small dimensions. A diameter of 20 inches is optimal for this.

    As the child grows, so does the size of the bike. this is how teenage bicycles with 24-inch wheels appeared. And even after reaching an average height, you can select models with large wheels, which allow you to ride with comfort and gain high speed if necessary.

    For leisurely walks, 26-inch wheels are good, this size is great for transporting a bike. However, it does not take up much space. If speed is important, the 27-inch size is more suitable. These rim dimensions are typical for road bikes. You can also navigate which bike is suitable by the frame.

    29 ” wheels are ideal for people with a height of 180 cm and above.

    A video showing the difference between 26 and 29 wheels using the example of overcoming pits and obstacles:

    Here are some figures for the most popular models, more precisely, the size of the frames and their ratio to the height of the cyclist:

    • Height 190 cm (and more). road 50-52, road 46-48, mountain 41-44.
    • Height 180 cm. road 57-59, road. 56-58, mountain. 48-50.
    • Height 170 cm. road bikes 53-55, road bikes 50-52 and mountain bikes 44-46.

    So everything is interconnected. the diameter of the rim, the size of the frame and the height of the rider. Of course, these are not strict rules, but only a recommendation and hint when buying a bicycle. There are more accurate tables, which take into account not only height, but also the length of the legs. However, this is more true for athletes performing tricks or setting speed records. The average two-wheeler will have enough of the above tips and the ability to adjust the saddle and handlebar heights.

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    Maybe someone else will need to buy a stem, but, in any case, first you need to understand exactly for what purpose the bike will be bought. From folding models, no one will expect an ideal fit or speed characteristics, and almost all cruiser models are designed only for leisurely defiles on flat paths. Tires play a huge role in the “size” of wheels for a bicycle.

    Models familiar to all with their characteristic frame shape and dimensions acquire a completely different look with a change in tire dimensions. An example of this is the emergence of a fat bike. The usual bike, “changed” into wide tires, set on suitable rims, is absolutely transformed. It was not only the appearance that was transformed. the controls, the dynamics of acceleration and much more were completely changed. So it is with standard wheel sizes. It is enough to put “slicks” instead of aggressive rubber. acceleration becomes noticeably easier and less effort is required to maintain a constant speed.

    Reference: Slick, slick. (slick) type of tires without a raised tread, which reduces the grip area with the road surface.

    many, inches, wheel, adult, bicycle