How much to swing the wheels on a bicycle

What to pump up

Bicycle luggage requires maintenance and pumping very often. Even on the most enduring city and mountain bikes, it is required to check and pump up the camera every 2-3 weeks, since the air leaks not only through the nipple, but also simply through the rubber. High pressure helps air molecules find their way through an insufficiently dense chamber.

City, or, simply, budget bicycles, it is enough to pump up once every 2-4 weeks, mountain bikes. at least once every two weeks, road bikes. once a week, and road and sports bikes. before each trip.

Therefore, the pump is not only an emergency accessory that is used only when a punctured wheel is changed, but also a necessary part of the preparation for departure. Active cyclists should consider purchasing two pumps:

  • portable. as part of an emergency kit or on long trips;
  • stationary with a stop and a pressure gauge. for periodic maintenance of your tires.

By the way, an ordinary car pump perfectly takes the place of a stationary pump. It is also suitable for bicycles, shows, shows exactly how many atmospheres are pumped up, and does not take up additional space. Some people prefer to pump up on professional pumps at gas stations, but the absence of their own professional tool can play a bad joke in the event of an unexpected situation or when you deviate from the standard route.

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What is written on the tires

The secret to making the right choice is very simple: just look at the inflated wheel. Next to the information about the size of the tire, there will also be information about the permissible pressure range in the chamber.

Why is this information not shown on the camera itself? Because in it the only point subject to real stress is the nipple, and its mechanism is very reliable. Otherwise, the normal pressure, which increases by an order of magnitude during fast skiing, is taken by the tire, and how much it will be compressed is the main limitation.

So, if the pressure is too low, the tire will break closer to the rim, bite the chamber, leading to a breakdown, and if it is too low, it may just burst on one of the bumps or when driving on hot asphalt.

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Standard pressure

Here are some tables that will help you navigate in difficult situations, namely:

  • an unknown tire without markings was purchased;
  • no physical access to the bike;
  • the marking is incomprehensible, the numbers are marked in unknown units.

For a road bike, the pressure should be much higher, and typically ranges between 6.5. 9 atmospheres (up to 130 Psi), up to the maximum indicated by the manufacturer.

Pressure effect

In fact, the optimal pressure in the tires of a bicycle is a purely individual parameter that each biker varies within certain limits for himself: for his riding style, for the planned route and the current level of training. The limits are set by technological constraints, which we will consider further.

Here are the main factors to consider when choosing an inflation level:

  • high pressure gives rise to rolling speed, saving the strength of the cyclist;
  • excessively high, in turn, can provoke a breakdown of the chamber against the rim from the inside;
  • similarly, low pressure leads to snake bites, when a rim on an obstacle or bump pierces the chamber at two points at once and reaches the tire;
  • low pressure prevents damage to mechanisms on numerous bumps;
  • at low pressure better grip and easier to move over rough terrain.
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Taking into account all the pros and cons, a single recommendation can be made: the wheels should be inflated enough to provide good traction and not damage the camera. For this, there are standards for what pressure is considered acceptable. We will consider them further.

Seasonal changes

Seasonal adjustments are quite serious, mainly related to mountain bikes. In the summer, you should slightly underestimate the pumping and not rest on the maximum. Hot asphalt also heats up the air inside the chamber, which increases the volume and therefore the pressure. Also, a pumped tire wears out very quickly.

In winter, you should sometimes slightly exceed the maximum in order to achieve maximum work from the tread, especially if the rubber is selected with spikes.

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Weight changes

For heavy riders or heavily loaded bikes, it is very important to add pressure, as a lot of mass will squeeze the wheel of the bike and problems with insufficiently inflated cameras can come out much earlier.

Recommended pressure for weight addition is 1% for every kilogram of rider weight over 50.

Markings

What do they write on the tires? For example, (2.38-4.0) is clearly atmospheres, or BAR, and (95-135) is Psi. If the figure has more than 3 digits or the prefix k (kilo), we are talking about metric Pascal. Most often, the desired value is located under the size designation and is duplicated in BAR and Psi in the form of a range, clearly indicating to what pressure you can pump.

Actually, the manufacturer specifies the range within which the tire can function, then. the freedom of the cyclist.

What should be the pressure in the tires of the bicycle?

Oddly enough, first of all, the quality of cycling, especially on asphalt, depends on the pressure in the wheels of the bike. Under-inflated wheels easily break through and dampen a large percentage of the cyclist’s efforts, while over-inflated wheels can damage the camera and lead to its rapid wear. Accurate knowledge and experience of riding will help you find the middle ground.

Markings

What do they write on the tires? For example, (2.38-4.0) is clearly atmospheres, or BAR, and (95-135) is Psi. If the figure has more than 3 digits or the prefix k (kilo), we are talking about metric Pascal. Most often, the desired value is located under the size designation and is duplicated in BAR and Psi in the form of a range, clearly indicating to what pressure you can pump.

Actually, the manufacturer specifies the range within which the tire can function, then. the freedom of the cyclist.

What pressure should be in bicycle tires: how many atmospheres to pump?

Oddly enough, first of all, the quality of cycling, especially on asphalt, depends on the pressure in the wheels of the bike. Under-inflated wheels easily break through and dampen a large percentage of the cyclist’s efforts, while over-inflated wheels can damage the camera and lead to its rapid wear. Accurate knowledge and experience of riding will help you find the middle ground.

Additional tips for choosing the right pressure:

When choosing the right tire pressure for your bike, you should also pay attention to factors such as:

  • The surface you are rolling on. So, when driving on rough terrain, soil or sand, it is enough to inflate the tires just above the minimum value, so the grip will be better. When driving on asphalt and flat surfaces, it is better to choose a value close to the maximum. this will improve the roll forward.
  • Your bike type. We recommend using different pressures depending on the type of your bike. For a mountain bike, this value should be lower than for a sports road bike, for example. The principle here is that the narrower the tire, the higher the pressure in it should be. And vice versa.
  • Outside temperature. In the heat, it is better not to pump the wheels to the maximum, because the air in the chamber heats up and the pressure rises additionally. And in winter, even when riding on snow, the pressure should not be lower than average in order to achieve maximum grip of the tread.
  • User weight. Inflate the wheels more if you are heavy or carry heavy loads on your bike.

To summarize, it should be noted that there are no hard and fast rules for how many atmospheres should be in your wheels. And the right answer will be your accumulated experience.!

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table of pressure norms in bicycle wheels of mountain and other models

The cyclist should check the tire pressure of his bike before setting off on his tracks or route. It is not recommended to ride on flat tires: both the rubber and the rim on which it is worn can be damaged.

BikeHike Standard Pressure

Use the values ​​above when inflating tires. The manufacturer writes a range on the tire so that you can select the desired value for the road surface. The maximum indicated value is considered to be for a hard asphalt road. It is better to leave the minimum value if you will ride on a country road or in the forest.

If you drive with minimal pressure on asphalt, you will lose speed and have to work harder with your feet. On a dirt road, additional cushioning is needed, which is provided by low pressure. It also improves traction, which is an added benefit.

THE MOUNTAIN BIKE DRIFT MODIFICATION

Children’s bicycles

For children, it is better to inflate the tires to the maximum allowed value. This will make it easier to learn to ride a bike, as well-inflated wheels have less contact patch and the driver has to put in less effort.

What do the numbers on the tire mean??

From the above, it becomes clear that the tire pressure of a bicycle should not be ignored. over, picking up the pressure is not at all difficult. You just need to look at the sidewall of the tire and find there the maximum and minimum pressure values ​​for your tire. How it looks approximately, see the picture below.

BAR is the pressure in bars or atmospheres (the generally accepted unit of pressure measurement in Russia), as you can see in the picture for a given tire, the value should be in the range from 2.8 (minimum) to 4.6 (maximum). If this value is multiplied by 100, you get the pressure in kilopascals. 280 and 460, respectively. PSI is the pressure in pounds per square inch, the minimum for the tire in the picture is 40, the maximum is 65.

Take the survey

  • High pressure. provides excellent roll and at the same time saves the cyclist’s energy.
  • Very high pressure. provokes tire breakdown due to friction against the rim from the inside.
  • Small indicators. cause double punching of the tire when overcoming bumps, irregularities in the road.
  • Low pressure. optimal for mountain bikes, riding on rough terrain.

Taking into account the peculiarities of different pressure indicators, we can conclude: the chambers should be inflated so that they provide full adhesion to the road surface, do not provoke wheel damage. The minimum and maximum allowable values ​​are usually indicated on the side of the tires.

Too low pressure in the wheels of a bicycle leads to breaking tires, biting the tube, which increases the risk of punctures and punctures. High performance accelerates rubber wear. The optimal parameters are calculated based on the manufacturer’s recommendations and experience, the skill level of the cyclist.

The tubes should be inflated so that they provide full traction and do not cause damage to the wheels.

Markings

What do they write on the tires? For example, (2.38-4.0) is clearly atmospheres, or BAR, and (95-135) is Psi. If the figure has more than 3 digits or the prefix k (kilo), we are talking about metric Pascal. Most often, the desired value is located under the size designation and is duplicated in BAR and Psi in the form of a range, clearly indicating to what pressure you can pump.

Actually, the manufacturer specifies the range within which the tire can function, then. the freedom of the cyclist.

Nuances of determining the pressure in bicycle tires, norms and recommendations

The comfort and safety of riding a two-wheeled vehicle is determined not only by the technical characteristics and the serviceability of the mechanisms. Of great importance is the pressure in the tires of a bicycle, which is measured using a special device. a pressure gauge. The parameters affect the control, cross-country ability of the vehicle. Strict adherence to the recommended indicators will significantly extend the life of the bike.

What to consider when inflating

The optimal pressure to use in a bicycle tire will not only depend on the manufacturer’s recommendations. The following factors are of great importance:

  • Seasonality. On hot days, you don’t need to pump your bicycle wheels to high pressures. The fact is that the air inside the chamber will warm up under the influence of sunlight. This will cause an increase in performance. In winter, when traveling on snow, use parameters below average to achieve good traction of the tread to the surface.
  • Cyclist’s weight. With a body weight of 50 kilograms, it is necessary to swing the wheels up to 2.59 BAR, with 120 kilograms. up to 3.4 Bar. If there is additional load, the pressure is increased by 1% of the average for each extra kilogram of luggage. However, significant overloads and high parameters can provoke deformation of the rim.
  • Terrain type. When driving on rolled roads, asphalt, rocky roads, the pressure in the chambers should be slightly above average. The same rule applies to stunt, sports bicycles. Riding on sandy, soft ground is better at low rates.
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Tire pressures for road bikes designed for firm, level roads should be above average. Low rates are optimal for fat bikes.

The type of bike is very important. For mountain models, lower rates are selected than for road, sports options. Rule of thumb: the narrower the bicycle wheel, the higher the pressure should be.

Cyclists who monitor and adjust pressure after each ride do not face tire repairs throughout the season. In a wheel inflated according to all the rules, rubber does not puncture, does not break, and lasts longer. Always follow the manufacturer’s recommendations, regardless of the bike model.

On hot days, do not inflate the wheels to high pressures If the cyclist’s body weight is about 50 kilograms, then the recommended tire pressure is 2.59 BAR, more than 100 kilograms. 3.4 Bar. chambers slightly above average Road bike tire pressures should also be above average By monitoring and adjusting tire pressure after each ride, major repairs can be avoided throughout the season

How important is the pressure parameter

There is no definite answer to the question of what pressure should be in the tires of a bicycle. This parameter is purely individual for each person. When choosing, they usually take into account the riding style, the level of training, the characteristics of the track on which it is planned to ride. Performance limits are set by specific technical constraints. There are several factors that need to be guided by:

Markings

What do they write on the tires? For example, (2.38-4.0) is clearly atmospheres, or BAR, and (95-135) is Psi. If the figure has more than 3 digits or the prefix k (kilo), we are talking about metric Pascal. Most often, the desired value is located under the size designation and is duplicated in BAR and Psi in the form of a range, clearly indicating to what pressure you can pump.

Actually, the manufacturer specifies the range within which the tire can function, then. the freedom of the cyclist.

Pressure effect

In fact, the optimal pressure in the tires of a bicycle is a purely individual parameter that each biker varies within certain limits for himself: for his riding style, for the planned route and the current level of training. The limits are set by technological constraints, which we will consider further.

Here are the main factors to consider when choosing an inflation level:

  • high pressure gives rise to rolling speed, saving the strength of the cyclist;
  • excessively high, in turn, can provoke a breakdown of the chamber against the rim from the inside;
  • similarly, low pressure leads to snake bites, when a rim on an obstacle or bump pierces the chamber at two points at once and reaches the tire;
  • low pressure prevents damage to mechanisms on numerous bumps;
  • at low pressure better grip and easier to move over rough terrain.

Taking into account all the pros and cons, a single recommendation can be made: the wheels should be inflated enough to provide good traction and not damage the camera. For this, there are standards for what pressure is considered acceptable. We will consider them further.