Bicycles Wheel Diameter For What Age

Bicycles for young ladies 4-6 years old. models, features of choice

A lot of kids at all times loved to ride bicycles. And now parents from an early age buy bicycles for babies. The article will discuss how to choose this type of transport for little princesses from 4 to 6 years old, as well as which brand to give preference to.

Bicycles Wheel Diameter For What Age


The Silverback Senza children’s bike is perfect for girls aged 3 to 5 years. It has a trendy design and is equipped with additional safety wheels which can be easily removed afterwards. The frame is lightweight, aluminum. Bicycle wheels with a diameter of 16 inches, and there are also wide metal fenders.


Features of bicycles for girls 4-6 years old

When choosing bicycles for babies from 4 to 6 years old, there are a few things to consider. So, these bicycles are designed for height from 101 to 115 centimeters. We will tell about the second features of choosing bicycles for girls of preschool age below.


Wheel diameter

This group of children’s bicycles is distinguished by the diameter of the wheels. He makes up for girls of this age 16 “inches. Also, all models have additional side (otherwise. training) wheels.


Generally, bicycles for girls aged 4-6 are equipped with soft and sturdy seats.


Stylish kids Forward Little Lady was created especially for girls aged 4-6 years. It has an aluminum frame, a wide seat that can be adjusted in height, pedals made of durable plastic, and a comfortable steering wheel with rubberized pads. The bike is equipped with 18 inch wheels, you can also install yes additional wheels if necessary. The rear foot brake is responsible for safety. There is also a trunk on the model, and there is a bell on the steering wheel.

You can also recommend the Funky 16 Girl model for girls. This is an excellent model for young cyclists who are just starting to master the skills of riding two-wheeled bicycles. A bike with bright accents, single speed, dual brakes, wide wheels with a diameter of 16 inches, a comfortable wide saddle that can be adjusted in height, and a chain guard. The bike has a trunk.


For little princesses, this manufacturer can recommend the S’COOL JUNIOR model. The bike is lightweight, with an aluminum frame and rim brakes. Also, the model is equipped with branded S’COOL tires, which are durable, have excellent grip and cross-country ability. Therefore, the young lady will be able to ride Not only on asphalt, but also along paths in the forest.

Scool Rennrad. This model is highly versatile, lightweight and strong enough. The model has 14 “wheels, so the bike is suitable for children aged 4 to 6 years. Rear foot and front hand brakes provided.

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

When choosing a novice cyclist for the first time, a completely natural question may arise. what diameter of 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 in some bikes designed for freeride riding.
  • 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 the traditional road bike with thin tires.
  • 27.5 inches. A relatively new wheel diameter, which is currently actively used in mountain bikes and represents a compromise between 26 and 29 wheels.
  • 28 inches. Wheels for city bikes as well as for hybrid models, which 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 roll-off and high cross-country ability.

Worth Pay 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 different types of terrain. Much will also depend on the type of tread on a bicycle tire fitted to that wheel.

The protector is as follows:

  • Slick. Thin tires without or with a slightly pronounced pattern on the rubber. Provides fast driving on level and clean road surfaces. Installed on city and road bikes. Minimal resistance Smooth surface allows you to quickly pick up speed and maintain it. 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 when driving in a straight line, and to ensure better grip when cornering and on wet surfaces. Mainly used in hybrid and city road bikes.
  • Mud. Tires with a pronounced tread pattern across the entire surface. Provides reliable contact with almost any coating 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 wheels accelerate faster and easier, but harder to maintain high speed.
  • It will take more effort and energy to turn a large diameter wheel at the start, but after acceleration it will be easier to maintain top speed.
  • When traveling long distances it is better to use larger diameter wheels.
  • If during a bike ride 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 a small wheel diameter.
  • 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? Look at city and hybrid bikes with 28 diameter.
  • Do you need compactness? Choose a folding bike with 24 or 20 wheels.
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Methods for measuring the diameter of wheels. What are the sizes of bicycle wheels?

Wheel sizes depend on bike models, their intended use and the age of the owner. So, for children’s and teenage bicycles, sizes up to 20 and 24 inches with a wheel size of 508-609 millimeters are characteristic. Special bicycles, the so-called mountain bikes, have a wheel size of 26 inches and 660 mm. General purpose bicycles are road bicycles, often equipped with wheels of 28 inches and 711 mm. We should also highlight the category of mountain bikes, with a large size, they have 29 wheels. What is the size in millimeters? That’s right, 736 mm.

To calculate how much a 16-inch wheel will be in centimeters, you need to multiply this value by 2.54 and you get 40.64 cm, and a 10-inch wheel, how many cm? 10×2.54 = 25.4 cm!

Below are the wheel sizes for children’s bicycles.

The dimensions of the wheels of bicycles for a child are most often the following dimensions:

  • Wheel diameter 12 inches in cm is 30.48, age 3 years;
  • Wheel diameter 14 inches in cm will be 35.56, age 3-5 years;
  • Wheel diameter of 15 inches in cm will be 38.1, age 4-5 years;
  • Wheel diameter 16 inches in cm will be 40.64, age 4-6 years;
  • Wheel diameter 18 inches in cm will be equal to 45.72, age 5-6 years;
  • Wheel diameter 20 inches in cm will be 50.8, age 6-8 years;
  • Wheel diameter 24 inches in cm would be 60.96, over 8 years old.

Standard method

Initially, it is necessary to install the bike vertically in such a way as to exclude its accidental fall, it is best to fix the bike in an upright position.

Then use a tape measure to determine the distance from the center of the wheel axis to the floor. Divide this value by 2.54 to get the wheel radius in inches. The diameter is equal to two radius, which means that the resulting figure will need to be multiplied by two, And do not forget about rounding. To understand the wheel diameter of 40 cm, how many will be in inches, you need to divide 40 by 2.54 and you get the required value of 16 inches.

Further, to obtain complete information about the tire or tube, you need to measure the width of the wheel using the same tape measure.

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According to modern standards, bicycle tires are labeled in the following order: the first number indicates the diameter of the wheel, followed by the width of the wheel. The marking, expressed in numbers 26×1.75, indicates that the tires for this bike have a diameter of 66.04 cm and a tire width of 4.445 cm.

ISO measurement

The accepted unit of measurement in the ISO system is millimeters, respectively, if you measured in centimeters, you just need to multiply your result by ten.

The measurement process takes place exactly as in the first case, but the radius is measured from the center of the axis to the outer edge of the rim, the diameter is multiplied by two.

To measure the width of the wheel, the same steps are taken as in the first method, and it should be borne in mind that if the width of the original tire is only slightly different from the one you are going to purchase, then you will not have any problems when replacing.

Wheel diameter classification and marking

There are situations when it is impossible to read the markings on the wheels of a bicycle, and a worn out tire or tube needs to be replaced. In this case, there is only one way to find out the exact data for buying a replacement. to measure the diameter of the wheel. But how to find out the diameter of the wheel, using the means at hand? There are several ways to take measurements, but in order to avoid errors, pay attention to some rules.

When measuring, you should adhere to the following tips:

  • Fix the wheel in such a way that its rotation does NOT interfere with taking measurements;
  • The obtained measurement result is rounded to the nearest whole number;
  • The marking is most often located on the side surface.

In order to find out the diameter of the wheel, you will need:

  • Roulette or soft meter;
  • Calculator;
  • Measurement object (bike itself or its wheel).

Bicycle tire markings

As mentioned above, in the classic version, the marking is applied to the side surface of the tire in the following sequence:

  • Diameter in inches.
  • Width in inches.

The standard marking looks like 20 / 1.75.

In the case of ISO marking, the sequence looks different:

  • Profile height in millimeters.
  • Rim diameter in millimeters.

The wheel will also look like 44.4 / 406.

For successful operation of the bike, you should use only tires and tubes recommended by the manufacturer. The fact is that tires that are overly narrowed from the normal size are prone to more frequent punctures, and too high a profile will provide noticeable resistance when driving and be damaged more often. Use only the correct tire sizes and enjoy a pleasant cycling ride.