What to do if the rubber on wheels is uneven. Why tires "go with screw". Tire deformation with shock load

Car tires are the only element. vehiclewho binds it to the road. Often car owners forget that rubber is an essential element of a car that directly affects. But when the tires wear out, every driver with chagrin understands that it's time to spend money on the purchase of new tires. . After all, sometimes rubber wear may indicate possible car malfunctions. In this case, the replacement of rubber on a new one may not help. For example, with some types of breakdowns, your new rubber may be premature in a short time. Let's look at the ten most on which it is possible to determine the cause of this wear, finding out the technical condition of the vehicle.

1. Wire of tread tread centered (in the middle)

What does it look like: At the same time, as a rule, the tread in the middle of the tires (example in the photo) is stronger than all.

Cause: If the bus is most of all in the center of the wheel, then this suggests that the central part of the tread has the most contact with the road surface, compared to the tread closer to the edges of rubber. Consequently, the car on which this rubber was installed had a not enough clutch with a road surface. Accordingly, the car was insufficient.

Most often, this wear says that the tire was incorrect. That is, the tire pressure did not match the pressure that the car manufacturer recommends. This type of wear indicates that the owner of the car did not check the pressure and with sharp drops of temperature on the street at which the pressure in the tires can vary significantly.

The fact is that while the tires are cold (for example, after frosty night) tire pressure may be lower than the manufacturer recommends. But after the start of the movement, the tire pressure begins to grow from air heating in it. As a result, after a certain distance traveled distance, tire pressure may exceed the maximum allowed rate recommended by an automaker. As a result, the pumped unevenly adjacent to road coveringAs a result, the uneven wear of the tires in the center of the tread will be observed.

Some motorists are often advised to improve controllability and reduce fuel consumption, on the contrary to pump the wheels. But this is not justified. Yes, in this way you can slightly reduce the consumption of fuel and even slightly improve handling, but in the end you will pay for it by rapid tread wear.

That is, saving some money on fuel, you pay much more.

2. Tire hernia (bulking) and cracks on the side wall

What does it look like: Cracks and bulges on the side wall of the tire.

Cause: This usually comes from hitting the pit (pit) on the road, border, etc. Usually the tire is well protected from such shocks. But if the tire has insufficient pressure or is thrown, then as a result of the impact there is a great danger that the tire will be damaged. Large cracks on the side wall of the tires that pass along the rim of the wheels say that a long time was exploited with insufficient pressure. Small cracks on the side surface of rubber talk about external damage or the age of rubber (due to old age, the composition of rubber begins the chemical decay, as a result of which the tire begins to crack).

Tire hernia looks like bulging on the surface of rubber. Most often, the protrusion (hernia) appears on the side wall of the tire. Rubber hernia is associated with internal damage (layer of rubber). This usually occurs due to the blow side of the curb, pillar, etc. Most often after impact, the hernia (protrusion) of the wheel is immediately not manifested. That is, after hitting you can see the hernia only after a week or even after the month.

If you have noticed cracks or hernia on tires, it is necessary to buy new tires as soon as possible.

Remember that the use of rubber with hernia is very dangerous.

3. Celers in rubber

What does it look like: According to long observations, rubber with dents looks like in the photo. That is, the tire has the shape of tubercles and dents.

Cause: This type of tires is usually associated with (wear or damage to the elements of the chassis of the car). Due to the malfunction of the suspension softening strikes on the bumps is insufficient. As a result, the tire experiences overload from the blows taking over the maximum load. But the load is distributed unevenly over the entire surface of the tread. As a result, some areas of the tread are making more loads than others, which contributes to the formation of dents and tubercles on the tires.

Most often, a similar appearance of used tires is associated with bad shock absorbers. Although it is worth noting that any parts of the suspension that failed can cause such wear.

We advise you in case of detection of such a shin deformation, make full pendants and car racks in the technical center. We do not advise you to handle a similar problem on the tireage, i.e. In order to determine the cause of changes in the shape of the wheels. It is not uncommon when tire workers do not know that it may cause the appearance of irregularities (dents, tubercles) on the surface of the tread.

Most often, tire workers argue and believe that this is the cause of the wrong gathering of the collapse. But this is not a fact. As we have already said this reason can be associated with the failure of the shock absorber (s).

4. Diagonal dent with tread wear signs

What does it look like: A diagonal dent on the surface of the tread with an uneven deterioration of the tire surface.

Cause: Most often, this problem is found on the rear wheels, where the wrong collapse is incorrect. Also, such a deformation of the wheel may be associated with an insufficient rotation interval, as well as, sometimes such a change in the appearance of the tire can be associated with frequent transport of heavy loads in the trunk or in the car.

Heavy cargo can change the suspension geometry, which will lead to a diagonal deformation of the surface of the rubber tread.

5. Expanded tread wear on the edges

What does it look like: The internal and external protector has elevated wear, when as the middle of the tread is worn significantly less.

Cause: This is a faithful sign of insufficient. That is, the pressure does not correspond to the norm recommended by the manufacturer of the car. Remember that it is the most dangerous state of the tires. The fact is that with a reduced pressure in the tire, it is susceptible to greater flexion. According to the laws of physics, this means that when the wheel is rotated, the tire will accumulate more heat. As a result, the rubber will not evenly lie down to the road surface and, accordingly, we get uneven rubber wear.

Also, insufficient pressure in the tires will lead to the fact that the rubber will not be enough to soften the blows on the road, which will naturally directly affect the suspension. Over time, this tough impact on the suspension can lead to its premature failure, and also affect the similarity of the collapse.

How to avoid the problem of non-prescribed (insufficiency of pressure) tires: We again return to the fact that each driver must regularly check the air pressure in wheels, that is, every month or each time after a sharp temperature drop on the street. Also remember that the cooled wheels (when parking at night) can show the pressure below than is recommended by the car manufacturer. But with a long trip, due to air heating, the pressure may exceed the norm.

The fact is that this system, as a rule, warns you about changing the pressure in the wheel or with a sharp pressure fluctuate (for example, a sharp drop in the tire pressure by more than 25 percent), or with a significant reduction in pressure for a long time.

In other words, the pressure warning system in wheels can work only when tire pressure is significantly less than necessary. This means that you risks for a long time to travel on wheels with insufficient air pressure.

6. Convex side of the lateral tread

What does it look like: Side protector units are usually similar to bird plumage, have. Lower edges of the tread blocks are rounded when both higher edges of the blocks are sharp. Please note that you cannot notice this type of wear visually. This can only be understood when an inspection of the tread from the edge and to the touch, i.e. Using hands.

Cause: At the same time, it is primarily to check the ball hinges and the wheel bearing.

It is also necessary to check the stabilizer bushing, which, in case of failure, can lead to improper operation of the suspension stabilizer, which ultimately leads to this type of rubber tread wear.

7. Flat Wear Spots

What does it look like: One stain on the wheel has more wear than another.

Cause: Single stains of increased wear on the surface of the tire are often found with a forced cutting braking or driving, or when spoiling from the situation in order to get away from the impact (for example, if no other animal ran on the road unexpectedly). Especially similar wear will be visible after sharp braking with simultaneous drift, if there is no in the car.

The fact is that with a sharp braking and reservation in order to get away from the blow of the car without ABS more pronounced with blocked wheels, which will lead to about this type of worn spot on the tire protector.

Also, such spots may appear in cars that were parked for a long time.

Remember that with a long parking lot of the car, you risk tires, where the wear spots will appear on the tires of your car due to the uneven distribution of the car's weight to those. The fact is that during parking the rubber protector comes into contact with the surface not completely and in the end, a certain area of \u200b\u200brubber is deformed from a long parking lot.

8. Wearing the front edge of the tread

What does it look like: The front edge of the tread unit is worn, and the rear of the tread has more sharp corners. Please note that this type of wear may not be seen when visual inspection. Therefore, check the hand protector with the edge. If you notice that some tread corners are sharper (as a teeth on hacksaw) compared to other tread faces that are smoother, then these are real wear, and not the norm, as many drivers usually suggest.

Cause: This is the most common wear of tires. So, like this type of wear of the tires occurs very often and many car owners think that this is the norm, then it is not. In fact, this wear indicates that the wheel has insufficient rotation. Therefore, it is necessary.

Most often, the cause is associated with the wear of the suspension elements (SalentBlocks), with wear of the ball supports, as well as due to the wear of the hub bearing.

9. One-sided wear of tires

What does it look like: One side of the tire is more worn than the other.

Cause: Usually, when this type of wear, the cause may be the wrong gathering the collapse of the car. This type of uneven wear of the rubber tread is associated with the fact that it is not exactly on the road surface due to improper gathering-collapse.

In order to set the wheel exactly in relation to the road surface, it is necessary to adjust the gathering collapse.

Also, such wear can occur with damaged springs, ball hinges, suspension sleeves. Including, unilateral uneven wear of the tread can appear during transportation by car heavy cargo.

In addition, some models of powerful sports cars have a special similarity-collapse, which leads to similar non-uniform wear of the tires. But it is rare.

10. Tire wear to indicator

What does it look like: Many tires between the tread have wear indicators. As a rule, these are special inserts that help you determine when you need to change the tires to new ones. Usually the height of these inserts is lower than the height of the tread. As soon as tire protector in height comes with wear indicators, it is necessary to purchase.

Cause: Usually replacement of rubber should occur after the height of the tread has become lower than the manufacturer of tires recommends. It is not always easy to determine for the eye. Therefore, many companies tire manufacturers are installed on tires (between the tread) wear indicators. As soon as the height of the tread is wear out to the height, which indicators have, then it's time to change the wheels to new ones.

The rubber protector with a certain depth is necessary in order to divert water from the tire and prevent car aquaplaning on a wet road.

If your tires do not have a wear indicator, then you can independently measure the tread depth, in order to understand whether the time has come to buy new rubber. To do this, use the coin that the edge must be inserted into the protector and measure the depth. You can read more about traditional tire wear here or familiarize yourself with infographics given by us.

Attention! For summer tires The minimum tread depth should be at least 1.6, 2 or 3 mm (depending on the rubber manufacturer).

For winter rubber The minimum safe tread height should be at least 4-6 mm

Rubber is considered one of the most common materials today. Over time, the main characteristics can significantly decrease. A rather common question can be called how to carry out rubber softening. This procedure can be performed independently at home, it is important to comply with all recommendations.

Independent restoration of rubber

All materials over time lose their operational properties. Often you can meet the situation when the rubber becomes too tight and loses its elasticity. If you wish, you can restore the basic properties of the material, it is not necessary to throw it away. You can soften the rubber with a variety of methods. Among the features of this issue, we note the following points:

1. Rubber cuffs and seals of some devices over time lose their basic properties. In this case, you can buy new consumables, since their cost is relatively low.
2. Some elements are difficult to find on sale, which is associated with an unusual form and properties. In this case, it is softened when applying various common technologies.

There is quite a large number of different ways to soften the rubber, the most common is to use kerosene.

What is needed to restore the elasticity of rubber?

Rubber is considered one of the most elastic materials. It is for this reason that it is used in the manufacture of various seals. After the seal stops the workload, it is able to return its dimensions. This moment determines the distribution of the issue, how to restore the elasticity of rubber. Over time, this property is also lost. With too much wear surface, cracks appear, at the expense of which the insulation qualities are significantly reduced

It is possible to soften the rubber at home when using common substances. The following substances are used;

1. Kerosene can easily restore elasticity. This substance is ideal for handling small products, you can soften by soaking them.
2. Summer alcohol can be used to soften the structure. To do this, it is enough to create a small bath, in which the product is lowered for several hours.

When swinging rubber in the restoration fluid, it is worth considering that the material can significantly increase in size. To remove the substance from the surface, the product is thoroughly washed with water with soap.

In some cases, you can use hot water For softening rubber. This method is used to restore the insulation of the refrigerator door opening. It is possible to enhance the effect achieved by wetting the surface with silicone.

Seals from the material under consideration are also used in the production of windows. To increase the insulating qualities of the gum from time to time, silicone and glycerin are wiping. Such substances can be purchased without any problems.

How to give elasticity of rubber?

1. Stiffness increases in case the rubber is long in a dry state. Elasticity is restored by wetting the surface of the oil. The softening is recommended to be carried out periodically to achieve the desired result.
2. Automotive wipers can be lubricated with silicone lubricant, due to which the surface is softened. Of course, it is possible to restore the old design only in the case of the absence of mechanical defects.

In addition, special compositions can be found on sale, which can soften the structure after applying.

How to soften rubber at home?

At home, it is possible to soften the rubber when applying various materials. Received the greatest distribution:

1. Kerosene.
2. Castor and Silicone.

High temperature also leads to the fact that rubber becomes softer, but the wear resistance rate is reduced.

Kerosene

When considering how to soften the rubber, many pay the possibilities of using kerosene. Such a substance can restore elasticity indicator.

Features of application are that the product is swollen in a special bathroom, after which the surface is thoroughly washed and dried. If the length of the product is large, then it can be collapsed. It is maintained in kerosene for softening for several hours, as kerosene does not act immediately.

This substance has become widespread, it can also make a product softer. The procedure is as follows:

1. The suitability of the appropriate volume is selected.
2. The ammonia alcohol is divorced in water to obtain a demanding solution.
3. The product is placed in a solution for an hour for softening.
4. After that, the softened element gets and washed with clean water.

Drying is carried out at room temperature. It should be borne in mind that high and low temperatures are always negatively reflected in the state of rubber.

Silicone and Castorka

The non-elusive effect can be achieved in the case of using silicone and canopy. Among the features of the application, we note the following points:

1. Silicone has only a temporary effect. It can be purchased in specialized stores.
2. After lubrication, you need to wait some time. Silicone can absorb the structure by making it more elastic.

After half an hour, rubber will be ready for use. It should be borne in mind that the achieved effect will be temporary. When considering what a similar material can be softened, you can pay attention to the Caster.

The heating

In some cases, only a temporary softening is required, for example, when equipping the hose on the nozzle. It is possible to solve the problem in this case by temporarily lowering the product in a hot bathroom. After some time, the impact of high temperature elasticity rises.

With long-term operation, the rubber can cry. You can solve problems only in the case of boiling products. It is possible to significantly increase the efficiency of the procedure by adding to the salt. Boil is carried out up to the moment until the surface becomes elastic.

If there are difficulties in the removal of tubes and hoses, the heating is carried out by influencing the warm air flow. To do this, a construction or ordinary hairdryer can be used. At the concentration of high temperature air flow in one place, the plasticity increases significantly.

In conclusion, we note that only in the absence of defects it is possible to restore the material. Some recommended methods can lead to a deterioration in some operational characteristics. That is why it is necessary to comply with all the recommendations.

In my experience I know that not all products from rubber can be restored, i.e. Give them former elasticity and softness, after it has been loaded. In general, a small part of rubber can be returned to life, if we talk about rubber, and not about the newest polymers, which at a certain temperature of operation do not lose their physical properties.

The whole difference is that products from rubber, namely, the material "Rubber" in the process of its manufacture is a process as a vulcanization, when the basis of rubber - rubber turned into rubber when interacting with some substances at a certain temperature. Rubber was called a new material in which the rubber molecules created a single spatial grid, precisely due to this unified grid of rubber and has its physical properties.

To speak in one recommendation about all rubber products will not be practical, since the types of rubber are very much and each rubber has its incoming properties, as well as the degree of richness of rubber, the ability to crystallize and orientation, the strength of the chemical bond chain and the flexibility of macromolecules.

Basically, 5 main factors affect aging and loss of elasticity:

• the light effect at which an irreversible process of photocosis of rubber occurs.
• the ozone effect at which the cracking of stress rubber is obtained.
• the thermal impact destroys the spatial grid.
• radiation impact destroys the connection of molecules.
• vacuum impact breaks separate sections in the product.

All this negative impact leads to the fact that rubber becomes solid and / or fragile. If the product crumble, then it is not necessary to give it elasticity, since the connection between the molecules is torn.

But if the tires started, but did not start to collapse, then it can be returned to life.

One of the delusions is that many are advised to dip or sprinkle with solvents, gasoline or alcohol on the product. It is impossible to do this, since in the first place there is a rubber oil-benzo resistant, which simply will not perceive these liquids, and secondly, other rubber products simply dissolve partially or completely in these solvents, and the effect of elasticity will be only temporary.

But one of the actually effective solutions capable of "reviving" products from rubber is ammonia solution from 5% concentration.

In this solution, the product should be held by no more than 15 minutes, then, if possible, to reveal it by mechanical pressure and process the next composition.

Place the product after softening water-glycerin solution from 5% concentration.

In this solution, the product is also necessary to hold no more than 15 minutes.

The temperature of the solutions should be within 40-50 degrees.

There should be no time between the two solutions, since ammonia destroys the rubber with a long exposure, and the glycerin on the water slows down this process.

A ammonia solution is 5% on sale, for this reason 10% will have to buy and on the formula to dilute it with distilled water (see chemical formulas, I personally can allow an error)

The water-glycerin solution is 5% also on sale, there is only pure glycerin or 85%, it also needs to be diluted to obtain the appropriate concentration.

Tires are one of the most susceptible to wear of the parts of the car. But what to do if they wear unevenly. To begin with, it should be properly defined this non-uniformity of tire wear to determine its causes. How unevenly wear tires:

• at various places of the circle - at certain points of the tread, it is worn strongly (spots),
• on the various side of the tires - the outer, the inner side of the tire or its central area throughout the circumference,
• one tire is wears much faster than the rest,
• a pair of front or rear tires come into disrepair faster.

Let's now give the causes and consider the character of tire wear for each reason. Causes of these will consider from the most common to less common.

The tire is worn in the center or on the sides. The reason is insufficient or excessive tire pressure

Incorrectly exhaustable leads to the fact that their abrasion proceeds unevenly. Trying to identify this reason on specific worn wheels - a useless spending time. Pressure can change in each wheel in different ways, even if you always turn into all four wheels.

But this reason can be determined by the nature of the wear of the tread itself. The fact is that the untapped tire is known, it seems, and it's therefore, the sides of the working surface are extermined faster. But the pushed tires are erased faster, on the contrary, the central part, since, with overcall pressure, it is its pressure that pushes the most, as a result of which, the axis of the circle accounts for the most load.

The result of riding on the pushed (from above) and the untapped (bottom) tires

On the tire only certain areas are worn. Cause - deformed disk or broken wheel balancing

The deformed (cast, "eight", etc.) the disk can also often cause uneven wear of rubber. In this case, the wear will occur in certain places (spots) of the tread. If the disk "eight", then wear will be in the form of two stains: one on one side of the tire in a specific place, and the second is in the diametrically opposite place of the tire and on the opposite side. For disc deformations The tire is worn very quickly depending on the degree of deformation, of course.

Similar wear of the tire is subject to and in the case of sibalance wheel . Although it happens much slower than with a deformed disk.

And in both cases, an additional symptom is batting on the steering wheel or throughout the car . And the visual examination of the worn wheel will help reveal this deformation.

Sometimes the reason for the increased wear can also be the rubber itself - its marriage in the form of a bunting metal cord. Cord can burst if the rubber has already been significantly worn out.

Only the inner or outer side of the front wheels is wearing. The reason is the collapse of the wheels

If a leveling the front wheels Little, it means that your two front wheels are not parallel to each other. They either "closer" - look ahead, a little to the center of the projection of the direction, or inclined in one or another side relative to the vertical axis.

As a result, you get excessive wear of the rubber only the front wheels or on the inside or from the external one.

If a similar situation occurred with the rear wheels, then there is a bell beam (if available) or one of the failed (perhaps also curved) suspension elements.

The outer side of the tires can also wear out due to a faulty silent block or ball.

Only one wheel flashes. The reason is something happened in the suspension or the brake clinic

If any component has been caught in your suspension, such as the flowing rack, it can lead to excessive wear of tires on this particular wheel. If any suspension item works incorrectly, the wheel will bounce anymore either will be hard to pass the road irregularities. This creates additional friction on this bus, which makes it makes much to reduce its service life and the tire tread state.

Here, as a rule, uniform wear is only tires only on one wheel.

And now imagine that you drive around the whole day with a slightly pressing the brake with your foot. This is what it is like if you clinically some brake component, such as caliper (his piston). This is usually only on the same wheel, and it is beaten faster because of this (uniform wear occurs).

Only the front wheels are wearing. The reason - something happened in the steering

Almost every part of the steering system may also lead to tire wear. But the speech here will only be about the front wheels, and the nature of wear can be completely different: both spots and one side of the tires along the entire circumference of the tread.