Balancing tires with golf balls

What is tire balancing?

Probably quite a few people don't know what tire balancing is . Tire balancing is a process that must be performed every time a tire is changed. Balancing and installation of tires each time is carried out by a specialized service. I must say that balancing is best done in such services, if you want the work to be done with the highest quality, because they use special equipment and tools.

During tire balancing, the wheels of a car are placed on a special device called a wheel balancer. This device rotates the wheels of the car at a certain speed. The stand is connected to a computer that displays information about the smoothness of the wheels. If during this process it is noticed that one of the wheels is not rotating evenly, then this information can be seen on the computer, so the mechanic can also act accordingly - insert special weights inside the disk that will compensate for the imbalance.

When should tires be balanced?

Every car owner should know that tire balancing should be carried out every time it is time to change tires from the previous season to tires for the next season. It doesn't matter if the tires are brand new or have been used. Balancing is also necessary every time you need to change tires to different ones.

However, there is another option where tire balancing is required. This is absolutely necessary if, when driving the car at a higher speed, you feel a vibration that was not there before. Such vibrations usually occur at speeds approaching 100 km / h, but can also occur at speeds of 70 km / h. If you feel this vibration, then it should by no means be ignored. As soon as possible, you should go to a car service where your car will be taken care of so that you can use it safely again.

However, the above situations are not the only ones that indicate the need for tire balancing. This is also necessary if you happen to fall into a deeper hole.

What can happen if the tires are not balanced?

Tires must be balanced to ensure a pleasant and safe ride. Otherwise, various side effects may occur that may affect driving, for example:

• Driving will become more unpleasant, as vibrations will occur, which can greatly tire the driver.
• Vibration will cause both faster and more uneven wheel wear.
• Vehicle suspension parts wear out faster
• Driving safety will deteriorate. Driving with unbalanced tires is much more difficult, so in some situations where every centimeter of stopping distance or maneuver is important, accidents can occur.

Tire mounting process

Maybe a driver who doesn't fully understand yet how tires are beaded and balanced . The process of boarding and balancing will be discussed in more detail below. It should be noted that this work should be entrusted to service specialists, as they have all the necessary equipment for the high-quality performance of this work. It doesn’t matter if the service is big or small, the main thing is that good craftsmen work in it.

Tire mounting and balancing process:

1. The first job to be done is to lift the car onto a special car lift. This is necessary to facilitate access to the wheels. When the car is raised, the disc nuts are unscrewed and the wheel is removed.
2. Next, disassembly is performed - air is released from the wheel and then the edge of the wheel is removed from the disk using a mounting device.
3. The tire is removed from the rim using a special mounting tool.
4. In the process, the wheels of the car can be damaged, but in order for the installation to be successful, special pastes are used, with which the service personnel lubricates the edges of the wheels, so the installation is carried out with high quality. This paste also provides a better fit for the wheels on the edges of the rims.
5. On the same mounting device, each tire is mounted on its own rim. During this process, the service technicians keep a very close eye on everything in order to avoid mistakes, such as inaccurate fitting of tires on rims or air leaks in the tires.
6. The next step in the tire fitting process is to inflate the tires. Each tire is inflated to the pressure specified by the tire manufacturer.
7. Further actions take place on the balancing stand. This stand stimulates the rotation of the wheels while driving. Also, using this function, you can determine if there is an imbalance when the wheels rotate. If so, then this must be eliminated, otherwise it will become more difficult to drive a car.
8. To correct even the slightest imbalance, the wheels of the car are balanced with special weights that are installed on the inside of the rims.
9. The last step in the tire mounting process is mounting the tires to the vehicle. This can be done if there is no more imbalance and there is enough air in the tires.

Tips for extending tire life

Once the tires are fitted and balanced, you're ready to hit the road. However, it should be remembered that balancing and installing tires is not the only measure that is applied to tires.

While driving, an unpleasant situation may occur, for example, a tire burst. To prevent this from happening, you need to drive very carefully, and you also need to check your tires and rims regularly to make sure they are safe to ride. You can also follow a few tips that will extend the life of your tires because even if your car has new tires, they wear out over time. The only thing that can be done is to reduce the wear rate by doing the following:

• In order for tires to last longer, it is necessary to maintain an even pressure.

• Try to avoid sudden and aggressive maneuvers.
• It is desirable to protect tires from various oils and chemicals. If tires come into contact with these substances, their service life is significantly reduced.
• Pay attention to the rims before installing tires. To avoid damaging tires, do not change them on damaged rims.
• You should try to avoid driving on bad roads. Driving into a deeper hole can damage both tires and wheels. In order not to visit the service more often than you would like, it is better to choose a long, but better path.
• Also don't save money by buying winter tires or summer tires. Sometimes cheap and low-quality tires have to be changed more often. It is best to buy tires that will last several seasons.

Why do you need wheel balancing? | Internet

There are hardly any car owners today who need to prove the need for balancing. At the same time, not everyone, alas, realizes and understands the importance that balancing has in ensuring the safety of movement, and therefore they do not care much about the quality of balancing (including the choice of a tire service), as well as the quality of rubber and wheels that are offered on car market.

If not everyone, then at least the majority of car owners can give an answer to this question: it is necessary that the weight of the wheel be dispersed relative to the middle, in which case the vibration of the wheels will be minimized.

But why is this necessary, and what effect can it have on long-term performance, safe, comfortable driving and other important aspects? If you don’t go into all the nuances, the answer to such a question can be something like this: in the case where the wheel is not compensated in all axes of symmetry, uncompensated centrifugal forces with different application vectors appear, this is precisely what causes vibration of the wheels and loads in different directions hub. The following consequences may follow from this:0005

1. When exposed to loads unforeseen by the vehicle manufacturer, the main suspension units wear out much faster (the first blow, as a rule, is taken by the hub bearings), and with a significant increase in loads, there may even be a threat of their (units) unexpected breakage. The results of losing a wheel at high speed do not require any extra explanation.
2. Vibrating wheels have significantly poorer grip (unstable contact area), resulting in poorer handling and longer braking distances. All this greatly reduces the degree of safety of driving a car.
3. Uneven loads on the tread as a result of wheel vibration bring a significant reduction in tire life - tire wear occurs much faster.
4. And finally, with a strong vibration of the front wheel, passing to the steering wheel, discomfort is created for the driver of the machine.

How important is balancing accuracy?

Any unbalanced mass of the wheel due to its rotation produces its centrifugal force, with its application vector. Here you need to return to school physics lessons: the formula for calculating centrifugal force is:

Where m is the unbalanced mass, w is the angular velocity (speed of rotation), R is the radius of removal of the unbalanced mass from the axis of rotation.

We can observe that the magnitude of the centrifugal force is determined by the speed of rotation, the unbalanced mass and the radius from the axis to the unbalanced mass. Based on the foregoing, we can draw the following conclusions:

• - if the speed increases, the detrimental effect and all the adverse consequences of unbalanced (unsatisfactorily balanced) wheels increase significantly;
• - the tire gives the maximum impact on the technical condition of the wheel, since it is the furthest away from the axis of rotation.

Therefore, the faster the car moves, the more critical the influence of the quality of the wheel balancing is, and the more the risk of dangerous consequences of inaccurate balancing increases.

Types of wheel imbalance.

Unbalance can be static or dynamic. In both cases, we can say about the divergence of the axes of inertia (it is in the center of gravity of the wheel) and rotation. We will try to explain these terms in an understandable language.

Static imbalance occurs under the condition that the axis of inertia of the wheel is parallel to the axis of rotation, and the center of gravity is not at all on the axis of rotation. In this case, putting the wheel on an axle that rotates arbitrarily, we can follow how the wheel will make several swings, similar to a pendulum, and stand in a position in which the center of gravity of the wheel will be in the lowest position.

Dynamic imbalance appears when the center of gravity is on the axis of rotation, however, the axis of inertia does not converge with the axis of rotation and intersects with it at a set angle (with uneven distribution of its mass over the width of the wheel). In this variant, the determination of the imbalance of the wheel can only be carried out during its rotation.

Just the dynamic imbalance is eliminated by tire specialists by placing compensating weights in certain positions on both sides of the disc rim.

Unbalance tolerance.

Of course, creating a perfect wheel is unrealistic, and in view of the fact that we are talking about a "tire-wheel" set, the quality of the assembled wheel is directly determined by the quality of each of these elements. In this regard, there is a certain range - a tolerance within which the present imbalance can be considered acceptable.

Measuring the static imbalance of rubber by an ordinary car enthusiast and a tire shop foreman is an almost unsolvable task. But the assessment of the dynamic (according to the weight of the compensating weights during balancing) and the assessment of the magnitude of the lateral and radial beats of the wheel is quite easy when balancing. However, in order to accurately measure wheel runout, it is necessary to find a workshop that has a special device for this.

Interstate GOST 4754-9 is in force in our country7, representing the maximum possible values ​​of static imbalance, the weight of the corrective weights required to compensate for the dynamic imbalance, and also the maximum possible values ​​of wheel runout.

It should also be noted that violation of the provisions of GOST 4754-97 during the initial balancing is a reason to return or replace a new disk or a new tire in the store, but then you will need to document everything.

Influence of equipment and human factor

What has a greater influence on the final wheel balancing: the balancing device or the skill of the specialist? In general, both of these criteria are important in almost equal proportions. Knowledgeable tire shop masters say that absolutely everything can be balanced, but this is not at all the fact that the wheel can be safely used for its intended purpose.

If you are somehow able to assess the qualifications of a particular master by indirect features, then, unfortunately, the correctness and calibration of the balancing device, in any way. As a result, try to avoid doing wheel balancing in “roadside” tire shops unknown to you - such balancing needs to be rechecked anyway.

So what does good wheel balancing look like?

1. There is no point in balancing dirty wheels, with mud clods adhering to the inner surfaces of the disks and stones stuck in the tire treads, therefore, in a good tire shop, before balancing, your wheel will be thoroughly cleaned from stones and dirt, as well as from previously mounted compensating weights.

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