How long do semi drive tires last

Next, let's take a closer look at the instructions for certain actions that need to be performed in case of wear on car tires.

How to tell if your car tires are out of service

When diagnosing tires, in addition to the fact that it is imperative to pay attention to the degree of wear, there are also other equally important factors indicating the end of the service life.

In order to determine when the service life of car tires ends with a detailed inspection, you need to pay attention to the following points:

1. came to an end. The degree of wear can be determined by eye or with the help of tools. On the outside, the tire surface has numbers with different depths, so you can easily determine the degree of wear. In order to measure the tread height, you can use a ruler with a special depth gauge. For summer tires, this parameter should be equal to more than 1.6 mm, in turn, for winter tires - more than 4 mm. If these parameters are less, then it is necessary to replace the tires. When the wear is uneven, then measurements should be taken in the area where the wear is most visible. Otherwise, if the tread edge is worn on only one side, then the camber-toe angle has been violated.
2. Small cracks on the side of tires are an indication of aging rubber and a warning to replace, while deep cuts require immediate replacement.
3. If there is a swelling on the side of the tires - hernia , then this means that the threads of the cord layer have broken, in this case the tires must also be changed immediately. Also, such “hernias” can appear on the inside of the wheel, so you need to be extremely careful and inspect in time.
4. If tire wear on the outside is much greater than in the central part, then this may mean that the tires did not have enough pressure, if everything is vice versa, they are more worn in the center, and less on the outer edges, then there was an excess of pressure .

When any defects were noticed in the tires, it is recommended to carry out a replacement, and not a rescue restoration, in order to somehow extend the period of use.

To prolong the life of car tires, it is necessary to periodically diagnose them.

How to extend the life of your tires

In order to make your tires last longer, you need to follow certain rules of use:

1. If there are no obvious air leaks, you need to check the tire pressure every 2-3 weeks of use. This is because uneven tire pressure results in uneven tread wear. If the internal pressure is reduced by 10%, then this can lead to a 10-15% reduction in tire life. If the pressure is increased, then the wear also increases, but 2 times less than in the reduced one.

2. Since there is always more wear on the front (driving) wheels, then every 10-15 times. thousand or at the time of changing seasonal tires, it is advisable to change it in places.

   Swapping front tires to rear tires

   Scheme of swapping 5 car wheels

   Please note that although there are tires with directional and non-directional patterns, you still cannot change the direction of rotation of the wheel. And in the second option, the front wheels must be reboarded before being installed back.

3. It is necessary to check if the tires are correctly installed in relation to the rims, which is usually indicated on the sidewalls of the tires, this is important, since if the tires rotate in the opposite direction to the design, all their performance will be significantly reduced in all modes of operation of the car.

   Non-directional tire replacement scheme

   All-wheel drive tire replacement scheme

4. longer, and will have the correct fit.
5. It is best to buy and install tires on all wheels from one manufacturer and with the same pattern.
6. Observe all rules for storing removed tires.
7. It is important to regularly wash off the dirt from the tires with special care products, while paying attention that after washing off the products they do not remain in the tread grooves.
8. To maintain their appearance, you need to use special care products: tire conditioner, conditioner cleaner, tire color restorer.
9. Avoid driving too close to curbs or other protrusions to avoid damage to the thin side of the tire.
10. If you are going on a long trip, it is better to increase the inflation pressure in the tires, this will save fuel and reduce tire heat.
11. Try to maintain a moderate driving style.
12. No need to load the car, at 20% overload, the service life is reduced by 30%.
13. Avoid sharp obstacles because tire fractures can cause the cord under the tread to break.
14. Check wheel alignment once a year. Also, this operation must be performed after repairing the steering gear, replacing the hinges, as well as after strong impacts that can deform the elements in the chassis.
15. Keep the wheels balanced, it should be carried out after about 10000-15000 km or after each repair with tire removal.

Experts recommend that you regularly check the condition of your tires, monitor the pressure and degree of tread wear. After all, it is much more profitable to fix a malfunction in the early stages than to change all the rubber later. It must be remembered that proper and timely tire care is your safety and guarantee of the durability of your rubber.

Service life of bridgestone tires

How long winter tires Bridgestone will last

Manufacturer Bridgestone has developed winter tires specifically for the CIS countries. The line has been updated with studded and non-studded models. They provide effective braking and good handling on rough, snowy and icy roads. Due to the special structure, the rubber absorbs moisture under the tire and cleans the tread.

In order for tires to last as long as possible, it is necessary to choose the right model. You should also take into account the characteristics of the ride and climatic conditions. The service life of Bridgestone tires is 10 years. But with proper care and timely replacement (for the summer and winter), they will last longer.

However, it is recommended to carry out diagnostics annually, pay attention to the appearance, pressure loss in the tire. Such measures will determine whether the tire needs to be changed or if it is fit for use.

Key Benefits of Bridgestone Tires

Bridgestone tires are in high demand, which is not surprising, since they are thoroughly tested for quality even at the production stage. For their manufacture, components are used that allow products to meet international standards. The main features of these tires are directional stability, excellent grip, good handling. They are considered the most reliable and safe.

Q&A

The Speed ​​Index is the maximum allowable speed at which a properly inflated tire can be driven under load. The speed index, indicated by a letter, is located after the load index on the sidewall of the tire. For example, for a tire with a speed index of V, the maximum speed is 240 km/h. The tire load index is a numerical expression of the maximum load that a tire can withstand at the speed indicated by the corresponding index and at a certain air pressure in it. For example, for a tire with a load index of 116, the maximum load is 1250kg.

The country of manufacture is marked on the sidewall of each tire. For example, the inscription Made in Japan indicates that the tire is made in Japan.

The date of manufacture can be found in the DOT number which is printed on the sidewall of each tire. The three letters “DOT” on the sidewall indicate that the tire meets US Department of Transportation safety standards and is approved for use on highways.

Example: DOT YDLX P8U 4617

“DOT” is followed by an 11-character alphanumeric code. The first two characters after "DOT" identify the tire manufacturer and manufacturer's code. The next 5 characters is a code defined by each manufacturer and indicates the internal codification. The eighth and ninth characters correspond to the week the tire was made. The last digit (or digits) indicates the year the tire was manufactured. The marking from the example means that the tire was manufactured in the 46th week of 2017.

The mileage on a set of tires depends very much on a number of factors, such as operating conditions, the quality of the road surface. Extremely affects the life of the tires and their wear and tear the manner of driving. Regular hard accelerations and brakings significantly shorten the life of your tires.

The appearance of uneven wear can be caused by various reasons, such as incorrect tire pressure, malfunctions of the vehicle suspension, incorrect alignment, violations of operating conditions. To prevent the occurrence of uneven wear, we recommend that you regularly inspect the tires and do not forget to monitor the pressure in them and the technical condition of the car. When changing tires seasonally, we recommend swapping wheels.

The maximum allowable wear level is determined by the Traffic Rules of the Russian Federation and is equal to 1.6 mm of rubber on the entire tread surface for summer car tires. For winter tires, the wear limit allowed by law is 4 mm.

The tread pattern is classified into three main types: non-directional asymmetric, directional symmetrical and symmetrical.

Directional: Directional tread tires are ideal for sports cars that regularly drive on wet roads. They are also recommended for driving on snowy roads. Mounting: As with asymmetric tyres, it is important to follow the direction of the tire's rolling, as indicated by the arrow on the sidewall.

Symmetric: Symmetric tires are designed primarily for city or compact cars for short distance driving. The tire is suitable for those looking for good value for money. Mounting: A symmetrical busbar does not have a mounting direction. It can be installed and interchanged without fear of making a mistake.

The car manufacturer usually gives recommendations on tire selection. There can be several recommended tire sizes, each of which is guaranteed to fit the car without significant loss of handling, ride, speedometer readings and durability of the chassis elements. Alternative tire sizes that can be fitted to the vehicle can be found in the vehicle's owner's manual.

RunFlat technology is based on the concept of reinforced tire sidewalls. When a conventional tire deflates, it simply sags under the weight of the car, the beads move away from the rim and the sidewalls flatten onto the road, the weight completely destroying the tire in a few kilometers. Reinforced sidewalls of RunFlat tires keep the tire on the rim and successfully support the weight of the car after a puncture and complete loss of pressure. At the same time, all dynamic vehicle security systems such as ABS, ESP, DSC, CBC, etc. remain active. The maximum distance on a flat tire depends on road conditions and vehicle load, about 80 km. The maximum speed of the car is not more than 80 km/h.

Tires should be checked regularly. Particular attention should be paid to the condition of the tread, to identify the presence of cuts, cracks and other damage. Tires do not require additional care. Avoid applying various aggressive detergents (thinner, gasoline, etc.) to the tires.

Tire pressure should be selected based on the recommendations of the vehicle manufacturer. This information can be found on the information plate, which is usually located on the gas tank flap or doorway. The same information is displayed in the instruction manual for your car.

Your tires lose some pressure during use. We recommend checking every month or before long trips.

According to a 2017 Bridgestone survey conducted in Irkutsk and Krasnodar, 52% of vehicles tested had incorrect tire pressures.

Under reduced pressure, their adhesion to the road surface deteriorates, uneven wear appears, and fuel consumption increases. With increased pressure, depreciation worsens when overcoming bumps, the tire wears unevenly.

Nitrogen is an inert gas, which is dry air without oxygen (air contains about 78% nitrogen). The physical properties of nitrogen reduce pressure loss due to the natural permeability of tire materials, but do not completely eliminate it. Unfortunately, there are other ways for leakage: the point of contact between the tire and the rim, the valve (nipple), which does not give an absolute guarantee of maintaining pressure when using nitrogen instead of air when inflating the tire.

We recommend swapping tires for seasonal replacement. This will extend the life of the tire set by ensuring that all 4 tires wear evenly.

If the tires are on rims, they can be stored in the “lying” position (wheels can be stacked on top of each other to save space) or suspended. It is not recommended to store tires on rims in a vertical position. When storing rubber without discs, on the contrary, it is forbidden to fold the tires in a horizontal position and hang them up. It is desirable to store rubber without discs vertically (you can close to each other).

We recommend installing newer tires on the rear axle of the vehicle. This is due to the fact that in the event of an emergency, tires with a deeper tread mounted on the rear axle will help prevent the car from skidding or demolition of its rear axle.

Service life of car tires

A car tire is a rubber elastic shell that is mounted on a disc rim. It is she who is in direct contact with the surface of the roadway and is directly designed to reduce small fluctuations on the roads, as well as to compensate for flaws in the trajectory of the wheels. During operation, it is subjected to heavy loads of a diverse nature, therefore it naturally has its own service life, which is influenced by a number of factors.

Shelf life of tires according to GOST

Shelf life is the period during which the company guarantees the possibility of using the product for its intended purpose and is fully responsible for defects that arose through its fault.

When buying tires, you need to look so that no more than three years have passed from the moment of production. The date of manufacture and any other information is very easy to find out, it is indicated on the tire label among the general information about dimensions, design, speed and load ratings.

Tire production date

Russian legislation establishes the service life of car tires under warranty in accordance with GOST 4754-97 and GOST 5513 - 5 years from the date of manufacture, but for tires, first of all, the main indicator is the quality of the product, not time its use.

According to GOST, the average tire life should be calculated in the following order:

• ZR. This is how high-speed options are designated, these products can be used at speeds over 240 kilometers per hour. The product must fully retain its properties for 6 years.
• H - used at a maximum speed of 210 kilometers per hour, serve up to 5 years.
• S - maximum speed - 180 kilometers per hour. Can be used up to 4-5 years.

Experts recommend replacing tires before they reach their expiration date. Some motorists believe that if rubber is rarely used, while its age is already 5-6 years old, but this is an erroneous opinion! Indeed, due to the fact that defects appear in tires during operation and storage, they are associated with its oxidation and cracking - at a critical moment, it can let you down.

Shelf life of tires

Shelf life - a certain period during which the product, subject to the established rules of storage and operation, must retain all its properties. If the shelf life has expired, this does not mean at all that the product is unsuitable for use, but its technical characteristics may decrease.

Tires can age through physical and chemical processes, this hypothesis applies to tires that are not used or little used. To prevent the aging process itself, special substances are added to the rubber compound that help counteract harmful chemical compounds with oxygen and ozone. Doing so will ensure that, when stored properly, the tire will meet the definition of a new tyre.

It should be noted that the warranty shelf life is not the service life of . The storage period for five years is set, not because the tire will deteriorate after that, but because, according to the law, the manufacturer does not have the right to establish a shorter warranty period, which is protection for the end user.

In recent years, many American experts believe that the shelf life and operation of car tires should be limited to 10 years. In turn, German experts believe that the expiration date of tires should be limited to 6 years, this also applies to new tires.

Rules and norms for storage of pneumatic tires according to GOST 24779-81:

1. acids and alkalis on tires.
2. Busbars must not come into contact with copper or corrosive substances, and must not be loaded, kinked, or supported with sharp, uneven surfaces.
3. If you store tires in a dark, dry and cool room, then their aging will be significantly slowed down, and vice versa, if the room is humid and there are temperature fluctuations, then the aging process is accelerated.
4. Tires intended for repair and retreading should be thoroughly washed and dried.
5. Tires should be stored at a temperature not higher than 35 °C and not lower than 25 °C. Avoid direct contact with a heat source, do not leave in direct sunlight at a humidity of less than 80%.
6. If tires are stored outdoors, they should be covered with an opaque waterproof cover and raised off the ground to ensure adequate ventilation to prevent the formation of a steam bath.
7. It is strictly forbidden to store tires on a wet, greasy/oily, gasoline or oil-contaminated surface.
8. So it is not advisable to keep them near sources of heat or near open flames.
9. Do not store tires on reflective surfaces (eg snow, sand) or heat-absorbing surfaces (eg black asphalt).
10. Tires should not be stored near an electric motor or with other sources of ozone. The level should not exceed 0.08 ppm.
11. Do not store tires near chemicals, solvents, fuels, carbohydrate oils, paints, acids, disinfectants.
12. Do not use the rail as a work surface or tool rack. Do not put a burning cigarette on tires.

For a complete list of rules and recommendations for proper tire storage, see the article “How to store car tires”.

Well-known brands of imported tires, such as: Bridgestone, Michelin, Goodyear and Dunlop last up to 10 years or more from the date of manufacture, this period is generally accepted throughout the world. But the total shelf life and storage in the warehouse, from the date of issue, tires Continental is no more than 5 years.

Although, as we have already figured out, the storage conditions of tires mean a lot, not only new ones, but also those that were removed from the car until the next season. For example, nokian tire expiration date ranges from 3-5 years, subject to verification at least 1 time per year, after 5 years of use.

Unfortunately, the legislation does not establish the permissible storage periods for tires in a warehouse, but experts believe that a tire that has lain there for about 5 years is still equal to a new one.

Tire life and use

The tire life of a vehicle is the length of time the manufacturer warrants the tires and is fully responsible for any defects found during use. According to manufacturers, tires should last at least ten years, although in practice they have to be replaced approximately every 5-6 years, in some cases even less.

Factors that affect the life of tires

There are many different factors that affect the wear of car tires, the main ones are listed below:

1. From the car and its carrying capacity withstand your tires (shows the load capacity index). Please note that depending on this parameter, there are certain norms for the mileage of car tires on the roadway:
   • For passenger cars: carrying capacity up to 2 tons, mileage 45 thousand kilometers.
   • For trucks: carrying capacity from 2 to 4 tons, 60 thousand kilometers.
   • Trucks with a carrying capacity of more than 4 tons - from 65 to 70 thousand kilometers.
2. Depending on tire size . Tires with a low profile most often tap on the disc on the stones, and therefore serve less. If the tires are wide, then the friction increases when cornering, especially in winter.
3. Driving style of the driver . The tire wears out quickly if the motorist often uses a sharp brake or, on the contrary, accelerates quickly.
4. State of the roads that you drive on every day.
5. From the distance you drive and frequency of use.
6. The quality of tires plays a very important role, for example, rubber made in China is short-lived, while rubber from well-known brands will last much longer. It is known that the service life of Chinese rubber is about two seasons, and branded rubber can last about seven years. When choosing tires, you need to pay attention to the manufacturer, because fakes are often sold under well-known brands.
7. Miscellaneous mechanical damage , such as cuts, bumps after impacts, deformation after emergency braking, accidents, etc.