Asymmetric tires- tires with different tread patterns on the outside and inside of the treadmill. Indicated by the following inscriptions on the side of the wheel: “Outside”, “Inside”, “Facing Out”, “Side Facing Inwards”, etc.
Symmetrical tires- These tires have a symmetrical tread, cord and sidewall construction. They can be installed on the vehicle in any position.
Directional tires- car tires with a strictly directed tread pattern, the direction of rotation of such wheels is indicated by an arrow on the sidewall of the wheel. They are marked with the inscription "Rotation" and an arrow of the direction of rotation.
"Left" and "Right" tires are terms denoting wheels, during the installation of which it is necessary to strictly observe the conditions of their installation on the car: "right" only on the right, "left" only on the left.
You can recognize them by the “Right” or “Left” markings on the sidewall of the wheel.
If there are no such inscriptions on the sidewall of the tire, then the tires of this model are not subdivided into "Left" and "Right", regardless of whether they have a directional or asymmetrical tread pattern.
These concepts are not mutually exclusive, asymmetric and directional rubber occurs at the same time. Several years ago the company produced asymmetric "Left" and "Right" tires.
But at the moment, asymmetric tires with a given direction of rotation are not produced, since "Left" and "Right" tires do not give special advantages in wheel characteristics, and at the same time, such a solution greatly increases the cost of production and creates additional problems in warehouses and shops.
Features of the tire design.
Nowadays asymmetric tires - both summer and winter tires - are gaining more and more popularity among motorists. The inner part of the asymmetric tire is made softer than the outer one, this is due to the fact that the load during cornering is mainly borne by the outer part of the wheel. This significantly improved the car's handling. Also, in general, an increase in the area of the contact patch of the tire with the road surface had a positive effect on the directional stability of the vehicle. In addition, due to the fact that the tread blocks on the outside of an asymmetric tire are larger than on the inside, improved drainage when driving on a wet road surface, which has a positive effect on the tendency to reduce the likelihood of aquaplaning.Directional tires with the best indicators of drainage from the contact patch of the wheel with the road, in terms of directional stability and controllability, are still inferior to asymmetric ones. But on the other hand, the risk of avaplaning in directional tires is much less due to the fact that the active drainage of water from the contact patch is carried out in both directions.
The appearance on the market of "left" and "right" tires was also due to the desire of the manufacturer to make driving the vehicle the safest, but, unfortunately, it turned out to be somewhat hasty. We can say that the designers of automotive rubber overdid it and did not foresee some factors. First, the production of such wheels significantly increased the manufacturing cost, which was reflected in the retail price; secondly, there was confusion in the suppliers' warehouses; thirdly, the consumer did not understand which spare wheel to carry with him: left or right, because it is not known from which side a puncture of the wheel will occur. Due to these factors, at present, tire manufacturers do not produce strictly "left" or "right" tires.
Features of the installation of tires.
Fitting asymmetric tires
Installation rules asymmetric tires intuitive and simple enough.When installing a wheel with an asymmetric tire on a car, its outer part must be labeled Outside (or similar from different manufacturers: External, This side facing outwards, Side facing outwards, etc.), at the same time, the inscription on the inner part of the wheel Inside ( it is the same: Side facing inwards, This side facing inwards) remains invisible to you, because is directed this side towards the vehicle.
Simply put, with the correct installation of asymmetric wheels, when walking around the car, you should only see Outside on the tires.
Installation of directional tires
Directional tires is set so that when the vehicle is moving forward, the direction of rotation of the wheel coincides with the direction of the arrow on the sidewall next to the Rotation inscription.
"Left" and "right" tires, as mentioned above, are installed, respectively, strictly on the sides of the car, which corresponds to the inscription on the tread Right (right) or Left (left) (in the direction of the car forward).
Installing symmetrical buses
Symmetrical tires have neither outer sides nor a given direction of rotation and therefore can be installed in any position.Note also that improper installation of asymmetric or directional tires on a car degrades the performance of the vehicle during its operation.
Incorrect "work" of tires in this case negates all the efforts of designers aimed at giving the wheels improved characteristics. When driving a car with improperly installed wheels (if there are simply no other options), it is necessary to observe increased vigilance on the road and move at a speed of no more than 80 km / h.
We hope that our tips will help you in checking the installation work.
The question "why did they bring me all four right (or left) asymmetric tires?" most attentive car owners ask when delivering tires.
Let's answer right away: "right", however, as well as "left" asymmetric tires are not produced at the moment.
A few years ago, Nokian had Nokian asymmetric directional tires (NRV model) that were "left" and "right". But it turned out that this decision caused a lot of inconvenience.
First, it made production more complex and expensive. Secondly, these inconveniences were due to the fact that it often turned out that only the left tires remained in one warehouse, and only the right tires in the other. Thirdly, it was not clear which one to buy a spare tire, because no one knows which tire will flatten or become unusable.
Imagine a situation where you bought 5 tires, two left and three right, logically assuming that there is a curb on the right and there are more holes and debris that can damage the tire. By the way, according to statistics, it is the right wheels that suffer more often than the left ones. But, by coincidence, it was the left tire that fell into disrepair! And with 4 tires of the same model (one left and three right), you still cannot fit the car with tires.
It is for these reasons that manufacturers now do not manufacture left and right asymmetric car tires.
Then a reasonable question arises, it turns out that asymmetric tires, which are on the left, "work" differently than on the right?
Yes exactly. When identical asymmetric tires are on the right, then part of the water is thrown, as it were, inward and backward, and if they are on the left, then they throw water inward and forward.
How does all this work and does it interfere with the control in the rain? Numerous tests and studies from major tire manufacturers have shown that this tire design does not affect handling.
Asymmetrical tread patterns come from motorsport. And they still remain the most efficient at high speeds, especially in terms of good directional stability in turns and informative driving. It is asymmetric tires that are now conquering the car tire market. They have many advantages over symmetrical and directional tires.
- Excellent handling of the car, due to the fact that the outer sidewall of the tire (indicated on the tire - outside), which is much more loaded in a corner, is made denser and with larger tread blocks. And the internal one, on which the load is much less, is, on the contrary, softer. This results in a good contact patch of the tire with the road and excellent handling of the car.
- Spare wheel versatility. Unlike directional tires, asymmetric tires do not need to be reinserted onto the rim in the other direction when the wheel is mounted from right to left (or vice versa). After all, the outer side of an asymmetric tire put on a rim will always remain outside, both when installing the wheel on the left and right.
That is why asymmetric tires have become so popular and in demand, despite the fact that they drain water from the contact patch in slightly different ways.
Large companies producing asymmetric tires (such as Michelin, Nokian, Goodyear, Continental) carry out a huge amount of research, developing and testing various options for tire designs, tread patterns and rubber composition. Therefore, when buying tires from well-known manufacturers, you can safely trust them in this aspect.
The only thing is that after you have asymmetric tires installed on your car in a tire shop, it is advisable to check that they were installed correctly.
The inner side on the bus is designated INSIDE, and the outer side is OUTSIDE. Therefore, if on all tires (on the sidewalls) you, bypassing the car, see the OUTSIDE inscription, then everything is installed correctly (you should not see the INSIDE inscriptions outside the car).
Some manufacturers of asymmetric tires designate the outer side of the tire (Outside) as: This side facing outwards, Side facing outwards or External. And the inner side of the tire (Inside): This side facing inwards or Side facing inwards.
No, I haven't changed
The topic is complete nonsense, even for idiots it says INSIDE AND OUTSIDE on the rubber
Click to Expand ...
This is a difficult story.
Here's a similar one:kirillkzn
But it will become higher by the 20s)Novaman
Like this?)Kirillkzn
I have summer 18s add clearance decently after winter 16s)Novaman
In general, it's strange, they shouldn't)Sonic-sonic
There is such a thing. if the wheels are larger)))) The tire calculator solves and dispels in such cases
Only to "decently" increase the ground clearance, it is necessary that the wheels are decently larger in the total radius))Kirillkzn
The tire ones will not work here, he considers the tire purely, but you also need to take into account the disk itself. I have only a couple of mm on it on the tire, it turns out the difference, in fact, the car becomes much higher after the winter, with the suspension unchanged, I think at least 1 cm for sure)Sonic-sonic
winter tires are much softer, from this to a centimeter error. Also, if the rubber is worn out, the overall radius of the wheel will change. Well, from the realm of fantasy - if suddenly a person mistakenly put tires that were not designed for the weight of his car, the ground clearance may also change.))Kirillkzn
Reply to a comment by Novaman written a month and a half ago
Well, if you imagine the distance from the bolts to the rim, then the larger radius turns out to be more? .. Even though the% of the tire's tread decreases.Novaman
The overall diameter of the wheel is the same ...Kirillkzn
Yes nifiga actually) I at least say based on my personal experience ... Clearance adds and significantly. Now, if you take an ordinary car, and put on it wheels 2 larger, it will be like a tank, right?) It will definitely become higher.Novaman
How did it happen. The diameter of the disc is 18 inches, the thickness of the rubber is an inch. total 20. Diameter 16, thickness 2, total 20. It's another matter if the diameter of the wheel is different. then naturally)Kirillkzn
Understood nothing)
But logically, using the example of my wheels on Mazda, winter 205/55 16, summer 225/40 18, that is, if 18 inches is 45.72 cm + tread height ((205 * 55) / 100) 9cm, then only 54, 72 cm wheel turns out, in winter 16 inches is 40.64 cm, + tire height 11.275 cm, total 51.915 cm, so my summer wheels in size 18 with tires 2.8 cm higher than winter ones! It turns out that 1.4 cm is added to the clearance.Correct if I'm wrong)Sonic-sonic
What are you smoking, friend?
I mean, I'm serious, where can I get such crap? I want it too.Here's a look at the rubber times: oh
But the rubber is two, more: 0
Now insert a disc of a suitable diameter into each. Has the rubber got bigger?)))
PS: you were not mistaken in the calculations, it just has nothing to do with the disc, you need to measure the rubber, it is already = disc diameter + tread height. The error only from the protector itself + - 5mm can be
Kirillkzn
I do not quite understand you, you would at least formulate your thought in one answer, and not in three. and what have you to do with smoking ... I have never smoked at all and nothing for that matter. I answered the question of why the clearance can increase, I substantiated everything, especially since you yourself write that I was not mistaken. and you said the same thing, the diameter of the rubber = the diameter of the disc, I just went with this option, but in the end there is no difference. and the tread error of + -5mm is absolutely insignificant when it comes to centimeters.Sonic-sonic
Come on, you can create a new science, I don't know how to explain it yet. Well, when you figure it out, do not forget to tell. I smoke it in my own way, but we communicate in the community, so no offense))Kirillkzn
No, well, we have a dialogue, I do not insist on absolute correctness, I just want to get to the bottom of the truth)Sonic-sonic
Well, I'm telling you that I understood this issue and painted all the options for you. There + 5mm, here + 5mm - this is how the difference sometimes turns out in cmSonic-sonic
wrong. If the disc diameter + tread height is selected, then the total radius can be the same for R16 and R18. If the R18 is larger in the overall radius, then yes, the ride height will increase.
Again, play with the calculator and everything will become clearKirillkzn
As the calculator shows, my winter and summer ones are practically one-on-one, the difference in the outer diameter is 5 mm! The difference in ground clearance is indicated in 2.5 mm! Theoretically, you can't notice this in any way! In fact, the difference is much greater, purely for the operation of the car, judging by, and even with the naked eye it is perfectly visible. Now explain how the clearance increases if your wheel + tire is matched almost 1: 1?Kondaurov
everything says it is verified, you need to read the profile plus the "inch" of the disk. After 16, put 45 and p17 the car became higher, I measured it with a tape measure. The result is on the faceSonic-sonic
Well, what is the exact parameter of each rubber? Let's count. I explained above what may be an error of 1 cm, but what you say is not realistic from any point of view. No science other than mathematics will help, and with its help it is necessary to count rubber. The distance of the bolts to the central part is the same even if the centering rings are supplied. You can check by taking one car and r16 and r17 wheels. . put the same rubber model on them and calculate its diameter so that it matches. And measure with a ruler to make sure you are wrong.Sonic-sonic online
the diameter of the rubber takes it all into account. Why count from bolts to rim? It is necessary to count from the very center to the rim, only this is useless, since the size of the tires already takes this into accountKondaurov
I have a specific example, the difference is not big, but it is.Sonic-sonic
okay you won. I give up, hard case
The direction of rotation is absent on Bridgestone asymmetrical tires. This means they can be mounted anywhere in the car. They have the appropriate markings.
Direction of the busbars and correct installation
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Motorists are increasingly asking how to mount tires correctly and how to determine the correct direction of rotation. If the installation is done correctly, on the contrary, it seems that the structure looks asymmetrical. But that's okay, that's the way it should be.
What should you keep in mind?
The main thing is to look at the driver himself when installing the wheels with the inscription Outside. This applies to all wheels.
In this case, there are several designations for the working surface. Each has its own Bridgestone markings.
- On the inside: cote interieur, mount this side inside, side facing inwards, inside and so on.
- For the outside: cote exterieur, mount this side outside, side facing outwards, outside. All designations within one group are equivalent.
Why is it so?
The designers do their best to ensure that the wheels work as a whole on all axles.
To optimize the highly conflicting requirements, asymmetric, non-directional BridgeStone buses have been specially developed. Such wheels must adhere to the road surface with their entire plane. At the same time, it is important that water is also removed from the contact, with maximum efficiency.
To optimize the performance properties, the outer part is specially stiffened. This is especially important for those who often enter high-speed corners. Thanks to high-quality contacts, tread wear in such situations is minimized.
The stability of the effort at the start is ensured by the inner side of the BridgeStone tires. The same goes for braking. Or such an indicator as the effective removal of water from under the wheel.
What about rotation?
Every 50-70 thousand kilometers of run, it is recommended to rearrange asymmetric tires from one axle to another. This is necessary in order to avoid as much as possible uneven wear on the tread. But you need to remember a few more rules.
- Bridgestone tires can be swapped crosswise if direction is not specified. For example, you can put the front right tire on the rear-left side. And on the back right is the front left, and so on.
- If the direction of travel is specified, the tires are swapped on the same side when the front axle changes to the rear.
On some features of tire installation
Fitting asymmetric Bridgestone tires does not require any special skill or skill. It is enough to remember a simple set of rules. The inscriptions on the inner and outer sides have already been mentioned. Then, after installation, these labels should no longer be visible. Only an indication of the outside should be seen.
But with directional tires, things are a little more complicated. They must be positioned so that the rotation of the wheel coincides with the direction of the arrow on the sidewall when the vehicle is moving forward. Only on the side indicated on the tire are wheels with left and right orientation. When considering the side, you need to rely on forward movement.
Symmetrical tires have no direction of rotation or sides. Their installation is possible in any of the available positions.
The performance of the vehicle while driving is severely degraded if directional, asymmetric tires are installed incorrectly. The wheels themselves are not working properly. Consequently, the characteristics are not fully disclosed, even if they are correct.
About mounting tires and wheels
The process itself should not cause any problems. It is better to look in advance in the instruction manual of the vehicle. It provides specific advice, recommendations for the procedure.
- It all starts with removing old wheels and tires. Why you need to unscrew the nuts. But you do not need to get rid of them to the end, it is enough to weaken them a little. It is safer to use hand tools for such work. Other options should only be used if you have special skills. If they are not there, it is not recommended to conduct experiments.
- A jack is useful to raise the vehicle. The main thing is that the working surface is flat. Now the nuts can be unscrewed, completely get rid of the wheels.
- In order not to get confused later, it is recommended to distribute the buses into several groups from the very beginning. It is better to put them in the same place as the old wheels. It is important to consider the direction of rotation, and pay attention to this particular factor. The same goes for the sides of the tires, the pattern on their surface.
Additional checks require rubber nuts. If there are even the slightest defects on them, they are corrected even before the final installation of the wheels. The store sells special kits for restoring threads on such tools. They will become indispensable helpers.
- Drums with brake discs must be free of rust, any traces of contamination.
- It is also necessary to check how the wheels are connected to the hubs. Tire runout is a consequence of the deviation of the center of the disc, even when it is small. Additional steering wheel vibration will appear. Otherwise the tire anchorage will be in jeopardy.
- To treat bolts against corrosion, you need to take wax spray, other substances suitable for such work.
- They proceed to the installation of the wheel if there were no problems at the previous stages. First, the bolts are baited, then they are slightly tightened. After that, the car is released. The jack is retracted and the nuts are tightened to the very end.
- Then it's time to do a post-installation check. The main thing is not to touch such parts as the inner side of the rim and the outer edge of the disc. To check it is enough to run your hand over each of the wheels. The tire pressure indicator requires a separate check.
Radial tires
This type of product is relevant for both conventional passenger vehicles and trucks. The name reflects the structure of the framework. The fibers in such tires are located at an angle to the direction of travel, 90 degrees. The marking will provide the information you need.
Radially, the fibers are located on the sidewalls - they look like rays extending outward from the center. Due to this, even in the lateral direction, the shape of the tire remains stable. Steel cord is used to ensure that the transmission of force is optimal, including in the longitudinal direction.
About bias tires
And in this type, the frame is created from special fibers. They are also located at a certain angle to the direction of travel. The fibers form a mesh by folding on top of each other.
Thanks to this design, it became possible to create tires with a round shape. The diagonal type of product is not equipped with steel cord. Therefore, it is not suitable for joint operation with trucks. They are easy to recognize, the marking is applied accordingly.
These types of tires are used where contact with the coating must be ensured not only at the bottom, but also on the sides. This requirement is important for agricultural machinery, motorcycles.
About tire wear indicators
In the grooves, between the tread, there are small protrusions, which become indicators of wear. The tire definitely needs to be replaced if the height of the ridges and the dimensions of the tread are equal to each other. These markings on the tires make maintenance easier.
The letter abbreviation TWI is applied to the lateral side in the same place as the wear indicators. This will make the location easier to find. 
It is advisable to install car tires of the same size on one car. If possible, the manufacturer and model should also be the same. Some tread patterns may be similar to each other, but each tire model has its own unique characteristics that are unique to it.
The grip properties will differ even if tires with a very similar but still different pattern are installed on different axles of the vehicle.
Recently, motorists have increasingly asked about the "correct" installation of "left" and "right" tires. The fact is that with the correct mounting of tires on a car, it may seem that the tires are installed on the contrary, asymmetrically. Don't be scared - that's okay. It should be so.
Asymmetric non-directional tires have no direction of rotation, i.e. can be mounted on any wheel of the car.
The most important thing…
The most important thing is that on all tires (after their installation) you have “ watched"Inscriptions" Outside«.
The designation options may be different:
a side may be indicated by the following inscriptions:
1. Internal side:
Side facing inwards
Mount this side inside
Cote Intérieur etc.
2. External the side, in turn, will be designated as follows:
Side facing outwards
Mount this side outside
Cote Extérieur etc.
Example of marking on the outside of a non-directional asymmetric bus:
Why, actually ...
The task that the designers of such tires set themselves was for two wheels on the axle to "work" as ONE WHOLE.
Asymmetric non-directional tires have been designed to optimize highly conflicting tire requirements. They must adjoin the entire plane to a dry road and, at the same time, effectively drain water from the contact zone.
The outer part is specially stiffened to optimize the performance of the tire in high-speed cornering when good contact helps minimize tread wear.
The inner side of the tire provides stability of effort at start and in braking, as well as efficient removal of water from under the wheel.
Rotation
During operation, it is also recommended to rearrange the asymmetric tires from the front to the rear axle (and vice versa) every 5000-7000 km. This repositioning is carried out in order to completely avoid the risk of uneven tread wear. It should be remembered that:
- If the tire has a predetermined direction of rotation (indicated by arrows on the sidewall and the word "Rotation"), then the tires should be swapped from the front to the rear axle on the same side of the car (the front right tire is installed at the rear right, the front left tire is installed at the rear left) ... Remarkable levels of return on withdrawal gambling winnings allow visitors to gambling sites to quickly fill up their deposit accounts. When you need to pick up the prize money, with the withdrawal of money to the card, the guest of such an Internet room just needs to fill out the appropriate application for the transfer of funds, taking into account the boundary limits for the transfer of amounts in force in the casino.
- If the direction of travel of the tire is not specified, then they can be rearranged crosswise, i.e. put the front right tire at the rear left, the front left tire at the rear right, and so on.
Examples of asymmetric non-directional buses
| Brand name | Summer | Winter |
| Bridgestone | Potenza RE 001 Adrenalin | Blizzak LM-30 |
| Potenza RE760 Sport | Blizzak LM-35 | |
| Turanza Serenity | ||
| Turanza ER300 | ||
| Continental | ContiEcoContact 3 | ContiVikingContact 5 |
| ContiPremiumContact 2 | ContiCrossContact Viking | |
| ContiSportContact 3 | ContiWinterContact TS 810 | |
| Conti4x4SportContact | Conti4x4WinterContact | |
| ContiCrossContact UHP | ContiWinterContact TS 830 P | |
| Cooper | Zeon CS6 | Discoverer M + S Sport |
| Zeon XTC | ||
| Zeon XSTa | ||
| Dunlop | SP Sport 01 | SP Winter Response |
| SP Sport 3000 | ||
| SP Sport FastResponse | ||
| SP Sport Maxx GT | ||
| SP Sport Maxx TT | ||
| Goodyear | Eagle F1 Asymmetric | Ultra Grip Performance |
| Excellence | ||
| EfficientGrip | ||
| Hankook | Ventus Prime K 105 | Ice Bear W 300 |
| Ventus S1 evo K 107 | Ice Bear W 300A | |
| Kumho | Ecsta X3 KL17 | I`ZEN XW KW15 |
| Ecsta X3 KL17 | I`ZEN XW KW17 | |
| Ecsta KH11 | I`ZEN XW KC15 | |
| Ecsta ASX KU21 | ||
| Michelin | Energy saver | Pilot Alpin PA3 |
| Primacy HP | ||
| Pilot Exalto PE2 | ||
| Pilot Sport PS2 | ||
| Latitude Cross | ||
| Latitude diamaris | ||
| Latitude Sport | ||
| Nokian | Hakka i3 | WR G2 |
| Hakka H | WR G2 SUV | |
| Hakka V | ||
| Hakka Z | ||
| Z G2 | ||
| Hakka C Van | ||
| NRVi SUV | ||
| Hakka Z SUV | ||
| Hakka SUV | ||
| Pirelli | PZero Nero | Winter 190 SottoZero |
| PZero Rosso | Winter 210 SottoZero | |
| P Zero | Winter 240 SottoZero II | |
| Cinturato P7 | Winter 270 SottoZero II | |
| P7 | ||
| Toyo | Proxes CF1 | Snowprox S942 |
| Proxes CF1 SUV | Snowprox S952 | |
| Proxes R33 | Open Country W / T | |
| Yokohama | AVID TRZ S316 | W.Drive V902 |
| Parada Spec-2 PA01 | ||
| C.Drive AC01 |
