What size of bicycle wheels to choose according to height

Age 2.5 / wheel size 14in

Bicycles with 14 “wheels are not much different from bicycles with 12” wheels. A bike of this size is suitable for a height of 95-110 cm. Large wheels provide better stability, a smoother ride and increased speed. Not all brands make bicycles with a diameter of 14 inches, so the choice of tires and spare tubes for such bicycles is much lower.

Age 9.11 / Wheel size 24 inches

24 “bikes are often the last step to an adult size bike and are suitable for those between nine and eleven years old or 130-145 cm tall.

Like 20-inch bikes, mountain, BMX and road models have distinctive features. 24 “mountain bikes have more speeds and more suspension travel than 20” mountain bikes. Also mountain bikes with 24 ”wheels can often be equipped with disc or rim brakes with handlebar grips.

24-inch road bikes extend their gear range to 21 and 24-speed, have slicker tires for higher speeds and lighter frames if your kid has racing ambitions.

Age 4.6 / wheel size 16 inches

This bike can be the next step after a bike with a wheel diameter of 12 or 14 inches, and immediately after a balance bike. Wheels with a diameter of 16 inches are suitable for height 100-115 cm or ages from 4 to 6 years.

The frame of such a bicycle can be made of steel or aluminum. Aluminum is lighter and less prone to rust, but more expensive. Many bikes of this size have only a rear coaster brake for simplicity’s sake. Sometimes complete with a front handlebar, but some bikes have both brakes with handlebars. Children of this age have sufficient strength to use these brakes, but before purchasing, we recommend that you ensure that the brake lever is specifically designed for small hands.

Choosing a bike by height (choosing the size of the bike frame).

Online ordering of bicycles is becoming more and more popular. Don’t worry about having to try on the bike in person first. This approach is very overrated! City bikes and cruisers often have no height differentiation at all and are positioned for cyclists with an average height of 155-180 (women) or 165-190 (men).

There are many good methods for choosing a sports bike to choose the right one, below we will take a look at the one we use ourselves. The size of the bike is measured from the beginning of the seat to the bottom bracket, as in the image below.

Take off your shoes and stand with your feet about 15-20 cm apart (shoulder width apart). Measure the height from ground to crotch. Decide on the type of bike you need: mountain bike, city bike, or road bike. Now you can take a calculator and calculate the size you want:

City bike. leg (cm) x 0.685 = your frame size

Mountain bike. leg (cm) x 0.66 = your frame size

Road bike. leg (cm) x 0.70 = your frame size

For example, if your leg is 76 cm long, then the correct size for a mountain bike is 50 cm or 20 inches, a road bike is 53 cm, and a city bike is 52 cm.

For generalization and convenience, below is a table that can be used when selecting a mountain bike.

Rider Height (cm) Leg Length (cm) Recommended Frame Size
145-158 60-73 13 “/ 14” XS 33-36
155-172 63-76 15 “/ 16” S 34-40
168-182 66-78 17 “/ 18” M 43-47
178-190 68-81 19 “/ 20” L 48-52
185-200 71-83 21 “/ 22” XL 55-58
200-210 73-86 23 “/ 24” XXL 59-62

This table is most relevant when choosing a mountain bike with no rear suspension. When choosing a bike with a rear shock absorber, the geometry may differ depending on the purpose of the frame. In this case, it is best to check the information on the manufacturer’s website. At the same time, the size of a modern bicycle will be the same for a mountain bike with 26 “wheels, including fat bikes, and for a mountain bike with 27.5″ wheels, and for a bicycle with 29 “wheels.

Hybrids, road bikes, cyclocross bikes, gravel bikes, road bikes and track bikes all have different geometries, which makes the size chart different for them. On average, the sizes of different brands and directions can be combined into one table:

Cyclist Height (cm) Recommended Frame Size
145-158 XXS 47-50
157-163 XS 49-51
163-170 S 51-54
170-178 M 55-57
178-183 M / L 57-59
183-190 L 58-60
190-200 XL 61-64

The height of the saddle extending from the seat tube is important when choosing a sports bike. Even a couple of centimeters in saddle height can affect pedaling power by up to 50%.

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Bike Model Recommended Height (cm)
Stels Pilot 3 / Desna 2100 140-180
Stels Pilot 4 (7) / Desna 2200 (2500) 150-200
Forward / Altair 150-200
Shulz hopper 140-180
Shulz (other bikes) 150-200
Author 150-195
Strida LT, 5.2 153-193
Strida SX, SD, C1 160-200
Giant / Dahon / Dewolf 160-180
Langtu (14-18 “) 140-180
Langtu (20-24 “) 150-200

Unlike adult bicycles, which have different frame sizes depending on the rider’s height, children’s bicycles are measured by the size of the wheel. You can read more about the selection of a children’s bike at the end of the article, but you can average in one table:

Child’s age (years) Height (cm) Wheel diameter (inches)
1-3 Up to 95 Up to 12 “
2-4 85-105 12″
2-5 95-110 fourteen”
4-6 100-115 sixteen”
5-8 100-120 eighteen”
7-9 115-135 twenty”
9-11 130-145 24 “
From 10 From 140 26 “

Problems when choosing an unsuitable bicycle size and options for solving them There are elements of a bicycle that you also need to pay attention to when choosing a size: handlebar stem, handlebar and seatpost and the position of the saddle in it.

If you have already bought a bike that is too big, the fit can be slightly corrected by replacing the stem with a shorter stem or by extending the saddle in the “rails” to a position closer to the handlebars.

If the size is too small, the problem can be corrected by installing a longer stem with a wide handlebar or replacing the seatpost with a longer one with a backward bend.

Age 2-4 / Wheel size 12 inches

Bicycles with 12 “wheels are usually the first pedal bike for a child. Designed for ages 2 to 4 or heights from 85 to 105 cm.Since this is often the first bike, it is best to opt for a simplified design without components that can complicate the riding experience, such as multiple gears, lever-operated rear handbrake or front suspension.

Feeling comfortable is critical to the very first bike, so make sure the fit is correct and your child is happy with the bike’s appearance. The frame can usually be made of steel or aluminum. Aluminum is lighter, not susceptible to rust, but also significantly more expensive.

Often such a bike is equipped with side balance wheels. Sometimes there is a brake with a handle on the handlebars, but children of this age usually do not have enough finger strength to brake.

Age 4.6 / wheel size 18 inches

Just as a 14-inch bike is an alternative to a 12-inch bike, an 18-inch bike is an alternative to a 16-inch one. A bicycle with 18 ” wheels is suitable for height from 100 to 120 cm and ages from 4 to 6 years.

27.5-inch wheels

  • Rim diameter: 622.
  • For teenagers and adults with a height of 165 cm.
  • Weighing up to 95 kg.
  • Road bikes are suitable for long distance road trips.
  • Models are equipped with a low frame and the ability to select speeds.

What is the best bicycle wheel size??

In the spring-summer period, parents begin to think about purchasing a bicycle for their child. And it is at this moment that mistakes are made in the search for the right purchase. In the choice, first of all, you should not rely on the appearance of the product, as this is deceptive.

size, bicycle, wheels, choose, according, height

Before buying, you need to know that a properly selected bike affects the human body and its further condition.

29-inch wheels

  • Rim diameter: 622
  • Wheels for tall people (180) with a wide rim and maximum grip.
  • Load up to 105 kg.
  • Ideal for urban wet asphalt and uneven gravel mountain roads.

Shop Talk: How To Choose Your Wheel Size

20-inch wheels

  • Rim diameter: 406.
  • Children’s bike for height from 120 to 140 cm.
  • Weight up to 40 kg.
  • Folding mechanisms are suitable for the initial stage in riding training.
  • A good option for children from 5 to 9-10 years old who have only recently driven.

Effect of wheel size on bike speed

There is a direct relationship between the speed and the diameter of the wheel.

From a physical point of view, the larger the wheel size, the more distance you can drive:

What MTB Wheel Size Should I Ride? | SportRx

  • Let’s say if a bike is 29 inches, then it will be much faster and more practical than a 20 inch.

However, this dependence is also counterproductive in another way. The smaller the wheel diameter, the faster you pick up speed. This is the main advantage of children’s bicycles, which, with an equal load, can accelerate to the same distance as an adult on a road bike.

However, keeping the speed will be more difficult, you will need to constantly pedal. On 26-29 inch models, the distance is covered faster, acceleration will be slow, but the speed remains longer.

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24-inch wheels

  • Rim diameter: 507.
  • For adults and adolescents from 140 to 170 cm tall and weighing up to 70 kg.
  • There are models with adjustable handlebars, seats and the ability to fold the bike.
  • Models are suitable for city walks and road trips.

Sizes of children’s bicycles

The manufacturer, when producing a children’s bike, knows that the baby is growing very quickly. And so he makes some size adjustments and tries to make the frame in such a way that the adjustment range is as wide as possible. However, the dimensions of the frame should not be taken into account as much as the diameter of the bicycle wheels. The controllability is high and the maximum speed depends on this parameter. You should not measure your baby with a caliper, you still do not know how he will grow in six months or even a couple of months, so a child’s bike should be chosen with some margin.

Here is a sample size chart for children’s bicycles.

20-inch wheels

  • Rim diameter: 406.
  • Children’s bike for height from 120 to 140 cm.
  • Weight up to 40 kg.
  • Folding mechanisms are suitable for the initial stage in riding training.
  • A good option for children from 5 to 9-10 years old who have only recently driven.

How to choose the right bike size for an adult or child?

Everything seems to be good. both the color is suitable, and the mechanics are working perfectly, but you get tired quickly, and skating turns into torture in an hour or two. All clear. The bike is incorrectly sized. To avoid such disappointments, you need to know what sizes of velor are, and how they fit your height.

Without theory. nowhere

Almost all bike frames come in a wide variety of sizes. And each manufacturer classifies them differently. Almost every. Each bicycle model has at least 3-4 sizes and, accordingly, different markings. Frames are marked by height in letter and digital form. The defining parameter for any bike frame is the height of the seat tube. It is measured from the center of the carriage to the end of the tube and can be specified in either inches or centimeters.

The length of the seat tube, of course, is not the only indicator that characterizes the size of the bike, but the main one. The geometry of the frame is also determined by the angles of inclination of the pipes at the joints, the length of these pipes and their relative position. Therefore, it is unambiguous to say that such and such a number is suitable for a specific person, but such and such is not suitable, it is impossible to say.

How to choose the size of the bike frame for height?

The size of the frame in terms of height must be selected from the size of the wheel: the larger the wheel, the smaller the size. The popular Stealth Navigator 500 series bike is available with three wheel diameters and 3-4 frame sizes. Let’s look at the height of 175-180 cm which frame is suitable for growth (table).

27.5-inch wheels

  • Rim diameter: 622.
  • For teenagers and adults with a height of 165 cm.
  • Weighing up to 95 kg.
  • Road bikes are suitable for long distance road trips.
  • Models are equipped with a low frame and the ability to select speeds.

Structural parts of the frame

The choice of bike depends on several factors. First, decide on the type of bike: mountain, highway, hybrid or kids. Having made a choice, we understand the design and dimensions of the frame, which is measured in inches.

The bike’s behavior is influenced by the geometry of the frame. The main elements that determine the reaction of the frame to external influences:

  • Top tube length (A) is the distance between the centers of the headset and seat post. Long top tube gives the bike “stability” and less maneuverability.
  • Steering angle (M). The angle between the steering column and a line parallel to the ground. Large angle (close to vertical) provides bike maneuverability.
  • Seat Angle (L). The angle between the seat tube and a line parallel to the ground. At low angles (large backward tilt of the tube) the rider’s weight shifts backward. providing traction, at more vertical angles the rider’s weight shifts forward, providing a better fit for power pedaling.
  • Wheelbase is the distance between the front and rear axles of the wheels. Longer base gives the bike more stability and less maneuverability.
  • The length of the rear stays is the distance between the carriage and the axis of the rear hub. Smaller rear frame stays provide better rear wheel traction and more agility. Usually the length of the rear stays is as short as possible to increase the rigidity and strength of the frame.
  • Carriage height (clearance, ground clearance). the distance between the bike carriage and the soil surface. Increasing clearance. decreases the stability of the bike, but increases flotation and vice versa. Road bikes have a lower bottom bracket than mountain bikes.
  • Stem length. the distance from the center of the steering column to the rudder; affects the maneuverability of the bike and the riding position of the cyclist.
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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 that allow you to ride with comfort and gain high speed if necessary.

For leisurely walks, 26-inch wheels work well, 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 right by the frame.

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

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.

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. An ordinary bicycle, “changed” into wide tires, set on suitable rims, has absolutely changed. 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.

Bike frame

The bike frame in the model range is made in several sizes: mountain bikes in 3. 5 standard sizes, road 2 or 3 options, and folding bikes in one universal size.

The frame of a children’s bicycle is sized for a specific wheel diameter: it is easier to determine how to choose a children’s bicycle by the size of the wheel (table of sizes of children’s bicycles)