# What is the pressure to pump into the bike

## Bicycle tire markings

On the sidewall of the tire, manufacturers indicate how many atmospheres to swing the wheels of the bicycle. The range is indicated within which the owner of the iron horse determines the desired values, depending on the specific factors of riding his bicycle. Values ​​in the range are labeled from min to max, in two or all three dimensions. Numbers up to 10 are atmospheres (or BAR), tens-hundreds are PSI, and six-digit values ​​or with the prefix k / kilo are Pascals.

When inflating a wheel, you must strictly adhere to the manufacturer’s recommendations and try not to go beyond both the minimum and maximum pressure levels indicated on the tire. over, it is better to leave a small margin of 0.2-0.5 BAR, both in one direction and in the other direction, so that the tire does not burst.

## Cyclist weight

It is important to consider the load on the bike from the rider’s own weight, especially the fact that most of it is on the rear wheel. Therefore, the degree of its pumping should be slightly higher than the front, the optimal difference is 10%.

To calculate what the optimal pressure should be in the tires of a bicycle, taking into account the weight of its rider, you can use the table:

Cyclist weight (kg) Pressure (atmospheres) Pressure (PSI)

 50-60 2.4. 2.9 34.81. 42.06 60-70 2.9. 3.2 42.06. 46.41 70-85 3.2. 3.7 46.41. 53.66 85-100 3.7. 4.0 53.66. 58.02 100-120 4.0. 4. 58.02. 59.47

Tire inflation will directly depend on the rider’s weight. The larger it is, the more atmospheres need to be pumped into the bicycle wheel. However, you should always remember that overloading the bike with simultaneous pumping of the wheels can lead to a twisting of the rim into a figure eight or a tire burst.

## Air temperature

Many cyclists do not think about the fact that the air temperature affects the pressure level in the tires of the bicycle. From the course of school physics, we recall that when heated, bodies expand. This means that in hot sunny weather, the pressure inside the air chamber will increase without additional pumping. Conversely, on cold winter days, a drop in tire pressure due to low temperatures is quickly felt. This means that when going on a bike ride in the cold season, the pressure indicators need to be adjusted slightly higher than usual, and in the summer heat, bleed the air a little. It is worth noting that when going to bike rides, you always need to take into account the weather conditions.

## Why you need to know tire pressure information

Many cycling enthusiasts believe that inflating the wheels is necessary only for a good roll of the bike. However, lowered wheels have a wider area of ​​contact with the road, which means that grip will be better, but it will be very difficult to accelerate to a speed of 30-35 km / h on such tires.

When inflating your wheels, you should always consider what kind of terrain or surface you will be driving on. If you are going to walk on an asphalt road, the tire pressure of the bicycle should be close to the maximum allowable value. Resilient wheels on a flat surface will provide smooth roll and high travel speed.

For riding on rough terrain with unpaved paths, it is better to set the pressure in the bicycle tires to a medium allowable so that you can easily ride long distances in comfort and convenience. At high pressure, the grip of the wheel with the road will be minimal, respectively, all pits, stones, irregularities on the road will be sensitive. And with flat tires, the likelihood of wheel damage or tube puncture increases.

To protect yourself on the road, as well as to keep the bike or its individual parts intact, you need to know exactly the lower and upper limits of permissible values ​​to what pressure the bicycle wheels can be pumped.

Tire pressure information gives you the advantage of cycling:

### Presta Valve

• an overly inflated wheel is prone to bursting or puncture about the rim, especially at high speed;
• too little pressure can cause a tire breakdown in the form of a snake bite when hitting even a small obstacle;
• reduced pressure softens bumps on the road, increases damping properties;
• pressure is normal at the lower limit, increases traction in off-road or rough terrain;
• normal pressure at the upper limit, in conditions of an asphalt road, gives a high speed, while saving the cyclist’s strength.

## Tire type and rubber surface

The type of tires is determined by the surface of the track on which the cyclist will mostly ride. Accordingly, the inflation rate of the bicycle wheel will be different. There is a direct dependence on the roughness of the tread and the width of the wheel. the more lugs and the wider the wheel, the lower the pressure should be. Empirically, cyclists quickly determine how much atmosphere should be in their bicycle tires.

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## What pressure should be in bicycle tires

When buying a bicycle for themselves, many will not even think about the fact that the convenience and comfort while riding it is achieved by correctly selected tire pressure. How inflated the wheels affect the life of the bike, the riding speed, the degree of tire wear, safety, control of the two-wheeled friend.

## Bike type

The nature, riding style and type of bike also affect the level of tire pressure. Active shoppers often opt for 26-inch mountain bikes that can ride well on city streets and off-road.

To understand the pressure to inflate the wheels of a bicycle, it is necessary to take into account the peculiarities of both the bike itself and other, at first glance, weightless factors. For example, tire weaving, rim thickness, driving style. The likelihood of a tire falling off a wide rim is much less than a narrow one, because a wider rim will hold the tire better than a thin one. A mountain bike, by its very name, suggests the presence of a difficult surface on the track, with possible obstacles and irregularities. Driving style is more aggressive than on a flat, calm trajectory, obliges to increase the tire pressure to a level slightly less than the upper limit.

The diameter of the wheel will also affect the selection of the optimal pressure value, since the larger it is, the higher the volume of pumped air will be. However, for mountain bikes it is not so important whether the wheel diameter is 26 or 29 inches, much more attention needs to be paid to the parameters of the cyclist’s weight and the type of track.

## Cyclist weight

It is important to consider the load on the bike from the rider’s own weight, especially the fact that most of it is on the rear wheel. Therefore, the degree of its pumping should be slightly higher than the front, the optimal difference is 10%.

To calculate what the optimal pressure should be in the tires of a bicycle, taking into account the weight of its rider, you can use the table:

Cyclist weight (kg) Pressure (atmospheres) Pressure (PSI)

 50-60 2.4. 2.9 34.81. 42.06 60-70 2.9. 3.2 42.06. 46.41 70-85 3.2. 3.7 46.41. 53.66 85-100 3.7. 4.0 53.66. 58.02 100-120 4.0. 4. 58.02. 59.47

Tire inflation will directly depend on the rider’s weight. The larger it is, the more atmospheres need to be pumped into the bicycle wheel. However, you should always remember that overloading the bike with simultaneous pumping of the wheels can lead to a twisting of the rim into a figure eight or a tire burst.

## Dependence of pressure indicators

The pressure in the wheel is held by the tire, not the tube, so there is no single standard for its value. There are several significant factors that determine how much wheel pump a bicycle needs.

## Bike type

The nature, riding style and type of bike also affect the level of tire pressure. Active shoppers often opt for 26-inch mountain bikes that can ride well on city streets and off-road.

To understand the pressure to inflate the wheels of a bicycle, it is necessary to take into account the peculiarities of both the bike itself and other, at first glance, weightless factors. For example, tire weaving, rim thickness, driving style. The likelihood of a tire falling off a wide rim is much less than a narrow one, because a wider rim will hold the tire better than a thin one. A mountain bike, by its very name, suggests the presence of a difficult surface on the track, with possible obstacles and irregularities. Driving style is more aggressive than on a flat, calm trajectory, obliges to increase the tire pressure to a level slightly less than the upper limit.

The diameter of the wheel will also affect the selection of the optimal pressure value, since the larger it is, the higher the volume of pumped air will be. However, for mountain bikes it is not so important whether the wheel diameter is 26 or 29 inches, much more attention needs to be paid to the parameters of the cyclist’s weight and the type of track.

## Tire type and rubber surface

The type of tires is determined by the surface of the track on which the cyclist will mostly ride. Accordingly, the inflation rate of the bicycle wheel will be different. There is a direct dependence on the roughness of the tread and the width of the wheel. the more lugs and the wider the wheel, the lower the pressure should be. Empirically, cyclists quickly determine how much atmosphere should be in their bicycle tires.

## Air temperature

Many cyclists do not think about the fact that the air temperature affects the pressure level in the tires of the bicycle. From the course of school physics, we recall that when heated, bodies expand. This means that in hot sunny weather, the pressure inside the air chamber will increase without additional pumping. Conversely, on cold winter days, a drop in tire pressure due to low temperatures is quickly felt. This means that when going on a bike ride in the cold season, the pressure indicators need to be adjusted slightly higher than usual, and in the summer heat, bleed the air a little. It is worth noting that when going to bike rides, you always need to take into account the weather conditions.

## What pressure should be in bicycle tires

When buying a bicycle for themselves, many will not even think about the fact that the convenience and comfort while riding it is achieved by correctly selected tire pressure. How inflated the wheels affect the life of the bike, the riding speed, the degree of tire wear, safety, control of the two-wheeled friend.

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## Why you need to know tire pressure information

Many cycling enthusiasts believe that inflating the wheels is necessary only for a good roll of the bike. However, lowered wheels have a wider area of ​​contact with the road, which means that grip will be better, but it will be very difficult to accelerate to a speed of 30-35 km / h on such tires.

When inflating your wheels, you should always consider what kind of terrain or surface you will be driving on. If you are going to walk on an asphalt road, the tire pressure of the bicycle should be close to the maximum allowable value. Resilient wheels on a flat surface will provide smooth roll and high travel speed.

For riding on rough terrain with unpaved paths, it is better to set the pressure in the bicycle tires to a medium allowable so that you can easily ride long distances in comfort and convenience. At high pressure, the grip of the wheel with the road will be minimal, respectively, all pits, stones, irregularities on the road will be sensitive. And with flat tires, the likelihood of wheel damage or tube puncture increases.

To protect yourself on the road, as well as to keep the bike or its individual parts intact, you need to know exactly the lower and upper limits of permissible values ​​to what pressure the bicycle wheels can be pumped.

Tire pressure information gives you the advantage of cycling:

• an overly inflated wheel is prone to bursting or puncture about the rim, especially at high speed;
• too little pressure can cause a tire breakdown in the form of a snake bite when hitting even a small obstacle;
• reduced pressure softens bumps on the road, increases damping properties;
• pressure is normal at the lower limit, increases traction in off-road or rough terrain;
• normal pressure at the upper limit, in conditions of an asphalt road, gives a high speed, while saving the cyclist’s strength.

## Bicycle tire markings

On the sidewall of the tire, manufacturers indicate how many atmospheres to swing the wheels of the bicycle. The range is indicated within which the owner of the iron horse determines the desired values, depending on the specific factors of riding his bicycle. Values ​​in the range are labeled from min to max, in two or all three dimensions. Numbers up to 10 are atmospheres (or BAR), tens-hundreds are PSI, and six-digit values ​​or with the prefix k / kilo are Pascals.

When inflating a wheel, you must strictly adhere to the manufacturer’s recommendations and try not to go beyond both the minimum and maximum pressure levels indicated on the tire. over, it is better to leave a small margin of 0.2-0.5 BAR, both in one direction and in the other direction, so that the tire does not burst.

## Bike type

The nature, riding style and type of bike also affect the level of tire pressure. Active shoppers often opt for 26-inch mountain bikes that can ride well on city streets and off-road.

To understand the pressure to inflate the wheels of a bicycle, it is necessary to take into account the peculiarities of both the bike itself and other, at first glance, weightless factors. For example, tire weaving, rim thickness, driving style. The likelihood of a tire falling off a wide rim is much less than a narrow one, because a wider rim will hold the tire better than a thin one. A mountain bike, by its very name, suggests the presence of a difficult surface on the track, with possible obstacles and irregularities. Driving style is more aggressive than on a flat, calm trajectory, obliges to increase the tire pressure to a level slightly less than the upper limit.

The diameter of the wheel will also affect the selection of the optimal pressure value, since the larger it is, the higher the volume of pumped air will be. However, for mountain bikes it is not so important whether the wheel diameter is 26 or 29 inches, much more attention needs to be paid to the parameters of the cyclist’s weight and the type of track.

## Dependence of pressure indicators

The pressure in the wheel is held by the tire, not the tube, so there is no single standard for its value. There are several significant factors that determine how much wheel pump a bicycle needs.

## Tire type and rubber surface

The type of tires is determined by the surface of the track on which the cyclist will mostly ride. Accordingly, the inflation rate of the bicycle wheel will be different. There is a direct dependence on the roughness of the tread and the width of the wheel. the more lugs and the wider the wheel, the lower the pressure should be. Empirically, cyclists quickly determine how much atmosphere should be in their bicycle tires.

## Why you need to know tire pressure information

Many cycling enthusiasts believe that inflating the wheels is necessary only for a good roll of the bike. However, lowered wheels have a wider area of ​​contact with the road, which means that grip will be better, but it will be very difficult to accelerate to a speed of 30-35 km / h on such tires.

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When inflating your wheels, you should always consider what kind of terrain or surface you will be driving on. If you are going to walk on an asphalt road, the tire pressure of the bicycle should be close to the maximum allowable value. Resilient wheels on a flat surface will provide smooth roll and high travel speed.

For riding on rough terrain with unpaved paths, it is better to set the pressure in the bicycle tires to a medium allowable so that you can easily ride long distances in comfort and convenience. At high pressure, the grip of the wheel with the road will be minimal, respectively, all pits, stones, irregularities on the road will be sensitive. And with flat tires, the likelihood of wheel damage or tube puncture increases.

To protect yourself on the road, as well as to keep the bike or its individual parts intact, you need to know exactly the lower and upper limits of permissible values ​​to what pressure the bicycle wheels can be pumped.

Tire pressure information gives you the advantage of cycling:

• an overly inflated wheel is prone to bursting or puncture about the rim, especially at high speed;
• too little pressure can cause a tire breakdown in the form of a snake bite when hitting even a small obstacle;
• reduced pressure softens bumps on the road, increases damping properties;
• pressure is normal at the lower limit, increases traction in off-road or rough terrain;
• normal pressure at the upper limit, in conditions of an asphalt road, gives a high speed, while saving the cyclist’s strength.

## Cyclist weight

It is important to consider the load on the bike from the rider’s own weight, especially the fact that most of it is on the rear wheel. Therefore, the degree of its pumping should be slightly higher than the front, the optimal difference is 10%.

To calculate what the optimal pressure should be in the tires of a bicycle, taking into account the weight of its rider, you can use the table:

Cyclist weight (kg) Pressure (atmospheres) Pressure (PSI)

 50-60 2.4. 2.9 34.81. 42.06 60-70 2.9. 3.2 42.06. 46.41 70-85 3.2. 3.7 46.41. 53.66 85-100 3.7. 4.0 53.66. 58.02 100-120 4.0. 4. 58.02. 59.47

Tire inflation will directly depend on the rider’s weight. The larger it is, the more atmospheres need to be pumped into the bicycle wheel. However, you should always remember that overloading the bike with simultaneous pumping of the wheels can lead to a twisting of the rim into a figure eight or a tire burst.

## What pressure should be in bicycle tires

When buying a bicycle for themselves, many will not even think about the fact that the convenience and comfort while riding it is achieved by correctly selected tire pressure. How inflated the wheels affect the life of the bike, the riding speed, the degree of tire wear, safety, control of the two-wheeled friend.

## Air temperature

Many cyclists do not think about the fact that the air temperature affects the pressure level in the tires of the bicycle. From the course of school physics, we recall that when heated, bodies expand. This means that in hot sunny weather, the pressure inside the air chamber will increase without additional pumping. Conversely, on cold winter days, a drop in tire pressure due to low temperatures is quickly felt. This means that when going on a bike ride in the cold season, the pressure indicators need to be adjusted slightly higher than usual, and in the summer heat, bleed the air a little. It is worth noting that when going to bike rides, you always need to take into account the weather conditions.

## How is tire pressure measured?

Forget about the old-fashioned way of checking a wheel with your fingertips. There is no need to rely on tactile sensations, trying to feel with your hand the degree of rubber pressing on the tire. The air leaves the wheel gradually, through the pores in the rubber. Within 2-3 weeks, the pressure decreases by 0.1-0.2 atmospheres, but you cannot determine this with your fingers. The exact value at any time will help determine the pressure gauge that every cyclist should have in his arsenal. With its help, it is easy to measure the pressure level in bicycle tires with a minimum error. A pump with a pressure gauge (floor or manual) will become an indispensable assistant for cycling enthusiasts.

There are three standard values ​​in which the pressure in the wheels of a bicycle is measured.

• Bar (or atmosphere) / BAR
• Kilopascals / kPa
• Pound per square inch / PSI

All these values ​​can be easily translated into each other, knowing their ratio:

1 BAR = 1 atmosphere = 100 kPa = 14.504 PSI

All of these units are used to varying degrees. in different countries, from different manufacturers. For residents of Russia and the post-Soviet space, the change in bars is more familiar, since this unit is clearly associated with the pressure value of the 1st earth’s atmosphere at ocean level. In America and Western Europe, the popular unit is PSI, as they actively use pounds and inches in measurements. Pascal is the least used unit of measurement, but the most modern. Some bicycle manufacturers write on their wheels data on the allowable pressures in all three systems.