If not for the pneumatic tire, the car would hardly have achieved the popularity it has today. But if you look at it, then a tire is just a tank filled with air, which needs to withstand a certain load for a certain time. The truck tire works in a very difficult conditions, therefore, it is to her that more claims are made than to the passenger one.
The most important performance parameter
The most important parameter in tire operation is the ratio between applied load and chamber pressure. It is quite simple to check it, but this is the main problem during operation. It is not checked as often as necessary and does not adhere to the rating for certain tires and operating conditions.
The pressure in the tires of a truck, the table of which is presented in several versions (for single, front wheels, for coupled, rear wheels and for wheels of semi-trailers and trailers) is the factor that forms the contact patch between the tire and the surface. By observing the correspondence of load and pressure, it is possible to ensure maximum long term tire service, improve road safety and affect fuel consumption.
Tire pressure and economy
In the dry language of numbers, compliance with the optimal proportion of pressure and load is expressed as follows:
The lower the pressure in the tire, the more the carcass, the cord is compressed. And depending on the material, fatigue and full wear can occur even before the end of the tread life. Here is a memo issued for drivers in the early 50s:
Correct tire pressure
Therefore, the pressure must be correct, but one parameter is most often indicated on the tire and in the tables, although there are at least three of them:
The maximum pressure is usually indicated on the sidewall of the tire in accordance with the standards of the country in which the tire was produced. In no case should this limit be exceeded, otherwise the tire may simply collapse on the go. Optimal pressure means the ideal proportion of load and pressure in the wheel, but it is almost impossible to reach its value. On each of the trips, the truck is loaded differently; it is not possible to control the parameters on the go on every vehicle.
The vehicle passport offers its own version of the pressure in the wheels and it fully corresponds to the axle load, not in general, but for a specific truck. Deviation from this parameter greatly affects the final mileage of the tire, which ultimately affects the profitability of the operation of the equipment.
Why is wrong pressure dangerous?
Now it is worth dotting the high and low pressures, how they are dangerous and when you can violate the permissible values given in the tables. High pressure in truck tires may result in:
Low blood pressure can also provide some unpleasant surprises:
However, in some cases, a short-term decrease in pressure can help to overcome the viscous complex road surface: soils, sand, soft soil, provided that the axle load is not more than two tons. In this case, a short-term decrease in tire pressure by 12-15% is allowed.
Tire temperature and pressure
When inflating truck tires, one must not ignore climatic conditions and just the time of year. It should be noted that when the temperature rises to 20 degrees, the pressure in the wheels will increase by 0.7 bar. In winter, when the air temperature drops to the same, but negative value, the pressure in the wheels will drop by 0.6-0.8 bar. In the event that the car is loaded, these figures will differ even more from the nominal ones.
Therefore, the tire pressure must be monitored and controlled as often as possible. Then the cost of operating the truck will be significantly reduced and the safety and resource will increase. Good luck to all roads and light cargo!
Useful informationTruck tire pressure affects a large number of characteristics of the truck itself. This can be the transfer of forces during acceleration, and ride comfort, and optimal mileage, and many other factors.
Truck tire pressure affects a large number of characteristics of the truck itself. This can be the transfer of forces during acceleration, and ride comfort, and optimal mileage, and many other factors. If the pressure in the tires is too high or too low, then this increases the likelihood of dangerous situations on the road.
Pressure too low entails a strong compression of the carcass, which leads to overheating of the truck tire, increased rolling resistance, uneven wear and reduced tire life. Suppose the tire pressure is 30% below the norm, this increases fuel consumption by 10%, and, which is very important, doubles the tire wear rate. In this case, the braking efficiency is reduced by 15%. Also, low pressure leads to "fatigue" of the frame, and often, to its sudden destruction.
If tire pressure above normal then this reduces the optimal mileage. Exceeding the norms of pressure not only leads to a decrease in the life of the tires, but also the tires wear out unevenly, this is especially evident on the driving axles.
Normal pressure in truck tires significantly reduces fuel costs, and also contributes to the safety of the carcass for its restoration in the future, which leads to savings of about 30-50% of the cost of buying a new tire.
Tire pressure from manufacturers
Mainly truck manufacturers indicate two tire pressures: one for full load, one for normal vehicle load. If the manufacturer indicated only one value, then for a full load of the car, you need to inflate the tires by 0.3-0.5 atmospheres. It is advisable to do the same procedure before going to long trip on the freeway.
Ideally, the pressure inside a truck tire should be commensurate with the load the tire is subjected to. The pressure is checked at least twice a week in truck tires Oh. You need to check cold tires, i.e. before the start of the trip. Because after a ride, the pressure in truck tires can be up to 20% higher, this is due to the peculiarities of the tire design. So, remember: in heated tires, the pressure is not measured.
All tires must have valve caps because these caps function as an additional valve that holds pressure. If the tires in the truck are flat or not sufficiently inflated, then you should not drive such a car. The tires in the truck should be inflated to the pressure level specified by the manufacturer for cold tires.
Pressure standards for truck tires
| Tire size | Model | Execution | Tread pattern type | Ply rate | Rim designation | Tire dimensions, mm | Int. pressure, kPa |
Max. speed | ||||
| outdoor Diameter | profile width | index | kN | index | km / h | |||||||
| 5.50-16 | F-122 | chamber | off-road | 8 | 4.00E. 4.50E 4.00E |
690 | 154/165
154/165 |
102 | 400 | A5 | 25 | |
| 5.00-10 | B-19A | chamber | universal | 6 | 4.00E | 507 | 140 | 70 | 3,3 | 294 | A6 | 30 |
| 165-13
(6,45-13) |
Bel-38 | chamber | universal | 4 | 114J (41 / 2J) 127J (5J) |
610 | 167/172 | 78 | 4.37 | 170 | V | 50 |
|
Promising models |
||||||||||||
| 28L26 | Bel-22 | tubeless | off-road | 12 | DW25A | 1577 | 713 | 49,2 | 160 | A8 | 40 | |
| 18.4R42 | Bel-49 | chamber | off-road | 10 | W16A | 1850 | 467 | 148 | 13,24 | 160 | A8 | 40 |
| 18,4-38 | Bel-21 | chamber | off-road | 10 | W16L | 1750 | 467 | 29,00 | 180 | A8 | 40 | |
| 18,4-34 | Bel-18 | chamber | off-road | 8 | W16L DW15L, DW16 |
1650 | 467/457, | 141 | 25,65 | 140 | A6 | 30 |
| 16.0-20 | F-64GL | chamber | off-road | 14 | DW-13 | 1075 | 405 | 36,7 | 350 | A6 | 30 | |
| 13.GR20 | FBel-334 | chamber | off-road | 6 | W12 | 1060 | 345 | 120 | 13.74 | 160 | A8 | 40 |
| 13,0/75-16 | FBel-340 | chamber | universal | 8 | W11 W8,8.00V |
900 | 336 | 18,64 | 240 | A6 | 30 | |
| 12.4L-16 | FBel-160 | chamber | off-road | 8 | W11 W10. W8 |
930 | 327 | 10.64 | 220 | A6 | 30 | |
| 10,0/75-15,3 | Bel-251 | chamber | universal | 8 | 9.00-15,3 | 760 | 264 | 13,05 | 420 | A6 | 30 | |
| 6.50/80-10 | FBel-263 | chamber | universal | 2 | 5.50V | 507 | 165 | 76 | 0,4 | 230 | G | 90 |
Long-term safe operation of the car, reduction of fuel consumption, safety of rubber, suspension of a truck largely depends on the air density index inside the wheel tire. See the recommended tire pressure of the truck in the table. To pump air with a compressor inside the tires, use the data in the table in the manual attached to the vehicle documents.
Importancetracking
Tire pressure monitoring is necessary, since this indicator is closely related to many parameters of the efficient and safe operation of a car, the wheels of which:
- Designed to receive torque from the engine and adhere them to the roadbed. Weak tires can cause the wheels to spin on the rim, with serious consequences.
- Tires are an element of transport, including freight. They absorb and soften impacts from uneven road surfaces. Lack of air while driving will cause a loss of tire elasticity and, as a result, increase the risk of rapid tread wear.
- Provide the quality of acceleration and braking of the car, excess and lack of air in the tires has a direct impact on the rate of fuel consumption.
- The stability and smoothness of traffic depends on them.
- Wheels define safe management car, the likelihood of the car spontaneously moving to the side increases.
- Decreased tire pressure can damage the wheel casing.
The technical condition of the machine ensures a safe state of movement on the track. Any emergency condition of the car on the road can lead to serious consequences.
To avoid problems while driving on the highway, you need to maintain this criterion at the level recommended by the manufacturer.
Parameter of air density in wheels for each type road transport installed individually by the manufacturer.
Watch the video on how to select the correct tire pressure.
The driver needs to know the current condition of the tires. In cold weather, tire pressure is measured at a shorter interval than in summer.
Basic techniques
To determine the level of air pressure in the tires of a truck, dial gauges are used, in which the rule of balancing the pressure operates by the force of elastic deformation of a spring made in the form of a hollow twisted tube.
The amount of air pressure in the truck tires is of great importance, as it determines the proportionality of the load on the truck tires. The air density in the wheels of transport for the carriage of goods must be measured at least twice a week. Most reliable device For this procedure, a pressure gauge with two heads with a graduation of at least 8 bar and a scale with an interval of 0.1 bar is used.
The most important factor affecting safety and driving comfort is such a parameter as the correct pressure in the wheels of the car. Without properly created conditions, it is impossible to ensure the safe use of the car.
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What should be the pressure in the tires of the car (table), we will consider in more detail. Many car owners are concerned about the tire pressure of their cars. It depends on how quickly the process of tire wear occurs, the nature of the car's behavior on the road, fuel consumption, braking distance and much more. Tire pressure, especially in winter, affects safety. Based on the above, it follows that every vehicle owner should know what the pressure should be in the tires and make regular checks.
Car tire pressure
This value is not constant. Depends on the temperature outside, and in what conditions it is used iron Horse... In winter, the pressure will be lower, as due to the rise in temperature, the air masses expand. At driving fast the surface of the wheel tires heats up, which also leads to an increase in tire pressure.
Factors influencing the choice of tire pressure:
- car model;
- weight and carrying capacity of the machine;
- wheel diameter;
- driving habits;
- road condition;
- season;
- winter or summer tires installed on the machine.
As a rule, manufacturers indicate what should be the pressure in the tires of the car. specific brand and models.
Manufacturers indicate what should be the tire pressure of a particular car brand
What happens if tire pressure is not observed
It is very important not to violate the recommended pressure. This will help to avoid many serious problems and breakdowns. The manufacturer indicates recommendations not in order to violate them, but in order to properly and as efficiently operate the car as possible.
Many unpleasant situations on the roads arise precisely due to the fact that drivers are rather negligent in checking this parameter. Incorrect tire pressures are especially acute when a vehicle is overloaded. On slippery roads v winter time there are problems when braking. It is the trucks, with emergency braking often roll over because there was insufficient pressure in one of the wheels.
There is a possibility of damage to body parts, as well as failure of the suspension.
Problems arising from non-compliance with standards:
- vehicle drifts and overturns during sudden braking;
- it is difficult to hold the steering wheel, the car skids;
- fuel consumption increases;
- breaks down steering system and a rail under constant pressure;
- rubber is quickly and unevenly erased.
Both under-pumped and over-pumped wheels will sooner or later create problems.
In case of problems with tire pressure, the car may drift
Under-inflated tires
If the pressure is below normal, then the roll of the tire increases when cornering. The car can simply be carried off the road or the wheel can be disassembled. Serviceable steering does not affect the situation. How many terrible accidents happened due to an oversight of drivers.
What are the dangers of under-pumped wheels:
- rubber wears out quickly;
- tires overheat and become unusable much faster;
- during bends, the car is more diverted to the side.
Inflated tires
Pumped-over rubber is also evil for a car. Wheels get stiffer and roll easier, Traction gets worse. Deteriorating management vehicle... When falling into a pit, not only tires can be damaged, but also the suspension and even some body elements.
Consequences of over-inflated wheels:
- quick wear of the car suspension;
Due to tire pumping, there can be a quick wear of the car's suspension
- the course of the car becomes stiffer, which increases the load on the suspension;
- noise in the cabin from the wheels.
Dependence of tire pressure on climatic and road conditions
The condition of the road surface affects the comfort of driving. If the roads are good, you can safely use the data of the tire pressure tables indicated in the manual for the car and enjoy driving without fear of car breakdowns and troubles along the way. If the roads leave much to be desired, then you can under-pump the wheels a little. This will soften the suspension and add comfort. In winter, when leaving the garage box in the cold, be sure to measure the pressure. It is necessary to monitor the indicators in the off-season.
What should be the optimal pressure
Each car has a user manual. Study it, it contains information about the correct tire pressure (table), recommended specifically for your car. If the instructions for some reason did not appear, then this information should be indicated on inside driver's door... The above information shows lowest pressure air in the tires of the car, recommended by the manufacturer.
Pressure in Hyundai tires Accent
Do not be guided by the inscription on the correct pressure indicated on the rubber. The maximum allowable value is shown there, but you need to focus on the recommended one. It is best to measure indicators in morning hours when the temperature of the wheel and air are approximately the same. In this case, the measurements will be more accurate.
The recommended tire pressure in winter and summer is influenced by the weight of the vehicle and the diameter of the rims. The measurement should be carried out on all 4 wheels, and also monitor the condition of the spare wheel. If instead of a standard spare wheel you have a "stowaway", then keep in mind that the indicators in it should be slightly below the norm. There is a special table of tire pressure by size, it also indicates the norms, taking into account the car brand and seasonality.
How to measure pressure: the correct sequence
The main stages of measurement:
- Unscrew the nipple cap.
- Use a pressure gauge to measure the pressure in the wheel. The device should be put on tightly and during measurement should not "etch" the air. Otherwise, the measurements can be considered inaccurate.
- Screw on the cap.
- It is imperative to check all four tires, this is the only way the readings can be considered accurate.
Checking tire pressure
Summer
There is no difference whether it is winter or summer time Years: tire pressure must be the same all year round. Experienced car owners reduce the recommended figure by 5-10%. This is due to the large number of holes on the roads. Under-inflated tires make the ride softer, which adds comfort to the driver and his passengers.
In winter
- The stability of the car increases on slippery roads.
- The braking distance is shortened.
- The suspension softens.
Increases car stability on slippery roads
Do not try to measure tire pressure visually. This cannot be done. Only an employee of the service center with very extensive work experience can estimate this approximately. An approximate result will not be able to save you from trouble, so for your own safety, visit a specialist regularly, or take measurements yourself.
The value can be slightly exceeded. In this case, you will save on fuel consumption. However, do not exceed the values indicated on the tires, this will only lead to trouble. If you have to travel a long distance or need to transport a heavy load, it is worth increasing the tire pressure.
When inflating the wheels, always consider the heating difference. On a hot sunny day, the tires get hot and in a car that is just standing, take this into account.
The correct tire pressure of a truck is one of the important parameters of wheeled vehicles, as it affects many characteristics. In this article, we will figure out what the correct pressure should be in the tires of a truck. Basically, the following depends on the pressure:
- ride comfort in the car, which is important for long trips;
- optimum mileage and fuel consumption;
- transfer of forces during acceleration of the car.
In addition to the factors described above, improper pressure is one of the causes of emergency situations on the road. When the permissible norm is lowered, the car frame strongly compresses, which results in unfavorable factors:
- significant reduction in tire life due to uneven wear;
- overheating of a truck tire;
- rolling resistance increases significantly.
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These are just a few of the negative consequences wrong pressure in car tires cargo type... For example, lowering the rate by only 30% leads to a significant increase in fuel consumption, equal to one tenth of standard waste. In addition, to the negative factors is added the doubled tire wear. Braking distances also get 15% longer.
Exceeding standards, as well as underestimating them, also leads to negative results.
The main problem faced by the owners trucks when driving with inflated tires, this is their uneven wear and, as a result, significantly increased wear.
Reduced tire life increases vehicle maintenance costs and can lead to accidents. Correctly inflated tires avoid all the problems described above, as well as optimize fuel consumption and halve the cost of changing tires.
Selection of pressure in truck tires
Finding the correct tire pressure for a truck is quite simple, since almost every car manufacturer indicates the nominal values in the instruction manual for wheeled vehicles. Usually, two numbers are indicated, which indicate the level of inflation of the wheels.
One of them is for a car without luggage, the second is for a loaded truck. If only one value is written, then it is intended for an empty car, and with heavy loads on the wheels, you need to inflate the tires by 0.3-0.5 atmospheres. This rule is also true for long trips in an unladen vehicle.
Such changes in the inflation of car tires are necessary due to the fact that the ideal operating conditions for a truck are proportional to the load on the wheel and the pressure inside it.
To maximize your safety while driving, you need to check the amount of atmospheres in the tires at least 2 times a week. The check is carried out before the machine begins to actively operate, since when driving, the tire pressure changes due to heating and may be greater than with cold tires.
Correct Truck Tire Pressure
There is a concept of "correct pressure" for wheeled vehicles of the cargo type. It can be divided into 3 main types.
