Symmetrical or asymmetrical tread pattern. Recommendations How to Determine the Tire Direction

05.04.2020

Even at the dawn of the automotive, when the tires of cars were made of natural rubber, which melted on the sun and double from frost, designers and manufacturers thought about something more perfect. After all, such tires are not far away from the wheel on the carte cart. As a result, the technologies developed, the methods of oil treatment were improved, times changed.
In 1927, among the other Soviet scientists Sergey Vasilyevich Lebedev, a synthetic rubber was obtained, which became the progenitor of the material of modern tires. But such a material did not become a panacea, except for the rubber itself providing high operational properties for tires, and the forms and profiles of the tire were also important. Subsequently, tire protectors have become flat, in order to provide a large area with an expensive, and therefore stability on the road. In addition, they appeared a protector. In this case, in some cases, the tire protector demanded a certain set of tires, by their rotation. It is about these most cases of installation, as well as that it will be if you set the tires incorrectly, we will tell in our article.

Direction of tires for rotation or types of tires

If you pay attention to tire protestors, which go through your city, then surely the most attentive will see that the tires are different. In one case, the tread pattern is like a chessboard, just squares, in the other there is a strict direction, relative to the transverse axis of the wheel, and symmetrical. And, in the end, the direction of this axis is asymmetric. That is, it can be said about a banal, very well-known fact that tire protectors are: directed and non-directional. Moreover, the filtered tire protector can be symmetrical or asymmetric.

(Classification of the type of tires based on the type of tread)

So why manufacturers are driving themselves to perform this picture, what role does he play when using tires? After all, all this is clearly not only for beauty.

Installing tires relative to the tread on the bus

Let's start with the case when the protector is non-directional. In this case, the proper installation of the tire, as to which it should rotate, does not have to speak. Which one way, what to another - no difference. Another thing when the protector is directed.
For a motorist - a man in the street that does not want to delve into the essence of the matter is simple. Look at the label on the rim "Rotation", which from English is translated as rotation, and put the tire on the machine in accordance with the rotation of the wheel along the movement of the car forward.

Or labeling "Outside" (outdoor) ...

For those who want to know why the tire must be stuffed exactly and not otherwise, and what can affect the wrong tire installation, we will tell the following.
The direction of the tread on the tire is designed to remove the liquid, dirt, snow porridge from under it, that is, everything that has a low viscosity. At the same time, this discharge is necessary in order to avoid the so-called aquaplamination effect. That is, prevent contact loss between expensive and rubber. Why do we need this very contact, we will not explain. We better tell about how the directional protector takes it all from the tire contact spots with the road.

How to properly installed tire with a directional protector reduces the effect of aquaplaning

Here you can tell for a long time and explain. But better, as they say, see once. Especially for you we made a gif. Take a look.

In fact, the protector works like a blade on the centrifugal pump, when he shakes water, except that the driving force here is not a centrifugal force, but the power from extriving the water in the tread grooves. The strength occurs every time the tire runs on that grade, which should be squeezed. So water, dirt, wet snow is squeezed into the groove and dismay. The wheel rotates on, and new water is again extruded in the groove again along the movement of the car. Due to the removal of such a "lubricant", the contact between the bus and expensive is improved, which entails a safer ride. So everything is simple and logical. Here I want to say about the direction of the picture. As we said, you can pay attention to the "Rotation" marking, and you can look at the drawing.

(tire installed correctly)

So, the tread grooves should always be separated from the tire contact spot with an expensive back of the machine, if you look at the wheels on the left. And the opposite situation for the wheels on the right. In this case, you can not search for labeling on the rim. I looked at the tread pattern and put a tire on the drawing machine.

What will happen if the directed bus is not in that direction

Here everything is on the logic of what is happening, but in reverse order. If everything that is under our wheels (dirt, wet snow, water) will be harder to be squeezed out, since the grooves will be directed to the fence of the whole environment, then in fact it turns out that in the center of the tire, in the spot of the contact, redundant pressure will be formed. It will try to raise the tire, which helps deteriorate to the clutch of rubber with the road. It is not safe.

However, if we talk about a dry road, when there is no water on the street, or it is frosty and simply lies the snow, then the presence of such grooves that will be dismissed, Zipi, in essence, do not oblige anything. Also, such grooves will not affect the situation at a limited rate, about 5-20 km / h.

Summing up the correct and improper installation of directional tires on the machine

So, the direction of the tread grooves on the tire was invented not just for beauty. If they are, they better use them. The directional tread grooves contribute to the taps of the liquid medium from under the wheel and thereby improve contact between rubber and expensive. Therefore, pay attention to proper installation tires. What to install the bus, you need to pay attention to its protector. At the same time, such a statement applies not only to the one who puts the already screamed wheel on the car, but also to the mechanics that set the tire on the disk. After all, the car must have two wheels on the left side and two on the right. Not otherwise!
Well, and about the case when exploitation is carried out with incorrectly installed tires. If it is dry on the street, then there will be no difference. If it's not a stupid street, it rained, then be extremely neat. Disable the car from the aquaplaning will be very difficult, but you can not tell about sad results. You yourself know everything about it without us.

Not so long ago, I wrote my own (read interesting). But many of my spectators on the YouTube channel (you can subscribe the link on the right), saw on my tires (which shoves to my Kia Optima) - allegedly wrong pattern. On the right, the Christmas tree looks not forward, and back! Well, it started - "Yes, you have the wrong tires are dressed," "Yes, what are you blogger after that," "Yes, I am installer for a service station and confirm - that is not properly dressed," etc. For all "clever" who have not seen normal winter tires And do not know what "Inside" and "Outside" is, this article is simply obligatory for reading (well, the video at the end also) ...

The worst thing in this topic is not "shkolota", which writes every nonsense in the comments, and tire workers (watch the video below). For everyone I want to tell about winter asymmetric tires.

Winter tires (main drawing types)

At the moment, there are only three types of tire pattern (which is on summer, that on the winter) is the so-called classic (they are also called still), directed and asymmetric:

- There is nothing to write, if you describe in a nutshell, there are smooth lamellas, the right side copies the left. The drawing can be directed against each other.

Directed - Here, the right side and left are mirror copies. Usually they have a forward direction (something like the Latin letter V, we have such a type called the Christmas tree). Also on the sides there is an inscription "Rotation", with a wheel rotation arrow. IMPORTANT! You need to put the tire - on the rotation arrow, if the arrow (and directed protector) look back it is not right!

previously, they were used mainly in the summer (now more and more manufacturers are moving for the winter). Here, the right and left side are generally not similar to each other. Usually the inner part of the tread is much already extended. NEED TO KNOW! Often, the drawing is not important here, it may even be directed back (right, left, forward) It is important here to combine two inscription "Inside" and "Outside" (about it is slightly lower).

Now many manufacturers for winter options are used precisely directional and asymmetric tread patterns. It is they who most effectively dismount moisture, snow and perfectly hold the car in winter turns, on ice.

It is worth noting that the installation rules on the tire unit, for directional and asymmetric species Differ (and not apply for each other) !!!

Simple words, it is wrong to look for the direction "Christmas trees" on asymmetric tires

Outside - What is it?

So we came to the most interesting. If with a directional and classic tire, when installed, everything is clear. We combine the "Christmas tree" and the "Rotation" arrow and install. That with asymmetric options a lot of confusion.

Frequently, such questions - "put the tires for a hundred wrong, the right side looks forward, and left back"! Or - "I sold 4 left or 4 right wheels." In general, "people are in danger", "what to do?"

Let's understand, remember the two rules when setting asymmetric tires:

Figure tread, drawing on cord - absolutely not important in the installation! Again - although he looks forward, back, right, left - does not matter.
The tire must be put on two labels - the inner side is the outer side.

But why exactly:

- See asymmetric tire, made a little different than two other types. Each zone is responsible for its part of the work. Usually, her inner side is slightly weaker, she has a thinner of the tread layer and it is designed to work at high speeds. When turning it does not undergo a major load, since it is inside - that is why Inside (translated as the inner side). If you put it out, then with a steep turn, it just may not withstand the load and burst! It is very dangerous

- How it becomes clear (translation outer side). It has a much larger and enhanced protector, and it perfectly holds a car in turns, the main load is underway. And yet it is usually "soldier" to borders usually. This side should be outside.

It is worth noting that the asymmetric wheels are the most technological of all three types. The back side of the medal may be a little big value, well, and an illiterate installation on the radical one hundred! Remember the main thing - correctly combine, otherwise it is just dangerous.

Symmetrical and asymmetric tires differ in the tread pattern. Also asymmetric tires may have different stiffness of the inner and external sidewalls. The main advantage of asymmetric tires is a large stability of turns. This is achieved due to the fact that their external sidewalls and tread checkers on the outside are tougher than on the inner side. As a result, the load on the spack of the tire contact with the road more falls on the outer side. It seems to be expanding the rut and makes the car more stable. This is especially noticeable with high-speed maneuvering.

The tire protector has two types of grooves: longitudinal and transverse. Longitudinal grooves are designed to counteract lateral forces, (they hold the car rate). Transverse oppose longitudinal forces (do not allow the wheels to stop). A typical option is four or five wide longitudinal grooves and as much narrower transverse. Total transverse grooves on a top of a top of dozens, but on the spot of contact simultaneously there are only five - eight. Why are the asymmetric tires better than symmetrical?

The same number of grooves can work with different efficiency. It depends on their transverse profile and configuration. Best rubber summer Has transverse curvilinear profile grooves: Christmas tree or wavy. With this configuration, they are obtained greater length and clutch area, respectively, also more. Not always summer tires works in dry conditions. Special drainage grooves are important on the wet road. On the summer rubber They are practically present. On winter it is done even more.

The number of grooves can be enlarged by expanding the contact stain by using a tire with a greater width. Usually the design of the hubs and brake mechanisms Allows you to install discs with a positive departure. Tires on such disks are the widest. The disadvantage of such a solution is that it repeatedly enhances the wear of the hub bearings. Therefore, it is recommended to use it only in extreme cases when all other ways to increase stability are already applied. Wide tires are almost always low profile. They additionally increase stability by reducing the road lumen.

Asymmetric rubber is not much more expensive than symmetrical, but for high-speed maneuvering it is suitable more. The only disadvantage is the complexity of the use of spare parts, as it is not clear to the wheel from which side it is better to take the spare tire. As a positive moment in favor of asymmetric rubber, it can be noted that on the front axle it serves longer than the usual. The timing wheel collapse causes reinforced tread wear from the outside, and on asymmetric tires it is more rigid.

Modern tires have a certain type of tread pattern. This drawing is: non-directional, directional and asymmetric. Thanks to this variety, sometimes you can get into the unpleasant situation, when the car for incomprehensible reasons starts to lead to the right or left, while the gathering variation is set correctly. In this situation, most likely, during the next "reobey" from summer for the winter or from winter for the summer, the wheel was established incorrectly. How to determine the direction of rotation of the tire in order to avoid such situations? The answer will find in this article.

The importance of the directional tire installation for different types of tread.

So, as noted earlier, the tires may have an unired, directional and asymmetric pattern.

It is this drawing that determines the demanding of the tires to the directional installation:

unired tires, by the way, the most budget option is equally operating in any direction of rotation;
asymmetric - require a careful installation, since such tires have a strictly defined direction of rotation - internal (indicated on the tire with the word "INS\u003e

That is why the direction of the tire rotation is, for the owners of tires with directional pattern of the tread, the most relevant. Before today, almost all manufacturers are applied to their tips "Tips": large arrows are drawn on their sidewalls, which just indicate the necessary direction of rotation. Although the arrow can be alone, then the word "Rotation" will be presented next to it.

If they do not, know, the tires with the "Christmas tree" should be installed so that the top of this Christmas tree with rotation touches the road to the first, that is, looked in the opposite movement of the car.

Note, in some cases there are tires that have both asymmetric and directed tread pattern. They should be installed according to the generally accepted marking.

If there are difficulties in determining the direction of rotation of tires, do not hesitate to resort to consultation of specialists who will help to understand all nuances, and also provide more accurate information on this issue.

Come to the issue of installing tires competently and with the mind, because your security depends on it!

Source AUTOEPOCHRU.

The modern bus industry creates its products better and better. Universal products are able to perfectly feel on dry asphalt, to remove water, provide grip with an expensive, and in addition - to provide acoustic comfort and reduce fuel consumption.

For modern machines A variety of sets with a variety of treads and mixtures are proposed. Such universality has one drawback. The tread pattern differs in half the tires. Therefore, Rotation, Inside or Outside, speaking the right direction of rotation on the tires.

In this article we will talk about marking the direction of rotation of tires, types of rubber, directional and non-directional drawing of the tread, and also we will also describe all the pros and cons of such products.

What is Rotation on tires

The main factor to pay attention is the tread protector. A competently selected pattern maximizes the contact stain with an expensive and will help you to remove water and snow porridge, preventing rubbing. Wheels are both with directional and non-directional pattern or asymmetric structure. They differ technical characteristics, Production cost and recommended use conditions.

The versatile is considered a set with a symmetrical non-directional protector. In addition technological process The production of such tires is much simpler than special tires, which positively affects the price. In addition, install tires with such a tread easy, because to confuse planting It is impossible.

However, this drawing does not provide maximum tire contact with expensive in difficult weather conditions. This solution It is compromise. It is better to use universal rubber as a sparewhich will easily become at any place, but not as a daily option.

The directional tires have their own pattern, which allows you to more efficiently to remove water and resist the aquaplaning. Characteristics compared to the tire with an unireded pattern, much higher. However, in the case incorrect installation Their tread grooves will, on the contrary, tighten the drops. Therefore, it is important to competently install such tires.

On such wheels there is own designation in the form of a Latin word Rotation. The direction of movement is determined by the corresponding arrow. The disadvantage of such tires is that the wheels can be installed without removing from the disk only on a certain side due to the fact that the tread pattern differs. If you want to put the left wheel on the right side, the rubber disassembly is necessary.

What does OUTSIDE mean on rubber

Image \u003d ""\u003e
Visually, you can also determine the direction of rotation of the tire. For efficient drainage from the tread, the guides should go from the center of the disk to its edges. If the drawing coincides, then the wheels are correctly installed. If not, then this direction of rotation is incorrect and it is worth the attention to this, over the wheel on the side of the wheel.

Often there are additional designations that are supporting useful information. For example, you can see the TWI mark on the bus these are indicators that denote the degree of tread wear. The last label is located at a minimum allowable height of 1.6 mm. Such marks help to understand which tires need to be replaced and follow their rubber.

Often in questions there are interest, which means M + S. M + S labels first put on all-season rubber. The literal designation is MUD + SNOW, that is, it is possible to work effectively on dirt or snow. However, it is worth remembering that there is no universal solution and it is impossible to fit the best rubber in one set.

All-hours work is best working with spunsal temperatures, so that in fact such wheels are demi-season. With a substantial fluctuation of the bit of the thermometer in any direction, the characteristics of the tire deteriorate significantly compared with the installed seasonal sets. Therefore, it is desirable to have summer and winter tires.

Internal and outer side of the tire

Marks on the external or inner side of the tire are extremely important in order to properly put rubber. Therefore, briefly summarize the stated material:

the most universal is non-directional symmetric tireswhich can be set to anywhere without removing from the disk directed - no. Therefore, it is worth it spare wheel with such a tread - this will make it easier as necessary;
outside Marking, like inside on tires (translation: outer or inner side), indicates asymmetrical tread pattern. The inscriptions are applied on the sidewalls of the product. These wheels have two different parts of the tire for dry or wet asphalt;
asymmetric rubber provides a more confident clutch with expensive, excellent drainage, maximum contact spot. However, such tires cannot be changed in places relative to the left or right side of the car;
the cost of such sets is 10-15% higher than similar tires with standard pattern;
when installing asymmetric sets or tires with a directional pattern, the tread pattern and the direction of movement of the wheel should be taken into account. Details of all tricks of tires can be found from professional videos.

Promotion: Sale of new cars 2018 release

Source DaciaClubmd.ru.

I think about any motorist who first changed the wheels for the first time, such a question arose - "and what wheel where to put?". Sure experienced drivers I will not say anything new, but many newbies read me and I think, for them this information will be interesting. This will be about this today, especially as never relevant, because Already begins then the time for "reobey".

Right or left?

This is the most common question, among those drivers who change the wheels for the first time. In general, to answer this question you just need to carefully look at your "rubber" - everything is written on it. The main thing - you need to figure out marks and understand what type of tires you have.

So, wide distribution now have 3 types of tires:

Non-directional
Directional
Asymmetric

How to understand what type of you?

So, the most elementary way - just carefully look at the sidewalls of tires.

If there are inscriptions on the tires "Ins\u003e that is, as you understand, just to carefully examine the tires - everything is written on them. No special knowledge is required.

Now will you deal with what axle to put the wheels - forward or back?

In general, there is nothing complicated here. You can highlight two cases - this is when you have new tires And when used. If the tires are new, then in fact there is no difference where to put the wheels (forward or backward) - i.e., you can put anywhere. And by the way, to wear the new tires to be more uniform, it is recommended to rearrange the wheels between the axes each season.

But if the tires are already used, it is customary to put on the front axle, the tires on which are worn less strongly. Those. Forward put the tires better, and back - worse. This is due to the fact that tire wear on the front wheels is stronger.

I would be grateful if put "thumb up" and subscribe to the channel "competent driver" - that you help develop the channel and make it better.

The importance of the directional tire installation for different types of tread.

So, as noted earlier, the tires may have an unired, directional and asymmetric pattern.

It is this drawing that determines the demanding of the tires to the directional installation:

unired tires, by the way, the most budget option is equally operating in any direction of rotation;
asymmetric - require a careful installation, since such tires have a strictly defined direction of rotation - internal (indicated on the tire with the word "Inside") and the outside (indicated by the word "outside");
directed - the most demanding questions for their installation, they have a certain pattern of the tread, which resembles a Christmas tree. This pattern has grooves for removing water when the tires with a road surface, due to which the risk of such a phenomenon, as an aquaplaning, when the machine, moving along the wet road surface at high speed, starts to lose contact with the road, is minimal.

Note, in some cases there are tires that have both asymmetric and directed tread pattern. They should be installed according to the generally accepted marking.

Come to the issue of installing tires competently and with the mind, because your security depends on it!

Video.

Similar articles: