What Does a Wheel Repair Specialist Do?

Car tire is one of the important parts of the car. It directly contacts the road surface and works with the car suspension to alleviate the impact of the car while driving, to ensure that the car has good seat comfort and driving smoothness; Good adhesion; improving the traction, braking, and passing properties of the car; bearing the weight of the car, the important role of tires on the car is receiving increasing attention.

Car tire

Car tire is one of the important parts of the car. It directly contacts the road surface and works with the car suspension to alleviate the impact of the car while driving, to ensure that the car has good seat comfort and driving smoothness; Good adhesion; improving the traction, braking, and passing properties of the car; bearing the weight of the car, the important role of tires on the car is receiving increasing attention.

In order to avoid these abnormal wear conditions, we should pay attention to the following:

1. Pay attention to tire pressure.

Air pressure is the lifeblood of a tire. Too high or too low will shorten its service life. If the air pressure is too low, the deformation of the carcass will increase, and cracks will easily occur on the side of the tire. At the same time, flexion movement will occur, which will cause excessive heat generation, promote rubber aging, fatigue of the ply, and breakage of the cord. If the air pressure is too low, it will also increase the tire ground contact area and accelerate shoulder wear. If the air pressure is too high, the tire cord will be subjected to excessive stretching and deformation, and the elasticity of the carcass will be reduced, which will increase the load on the car during driving. If it is impacted, it will cause internal cracks and blasts. Wear and reduce rolling resistance.

2. Regularly check the front wheel alignment.

Front wheel positioning has a greater impact on the service life of the tire, with front wheel toe and front wheel camber as the main factors. Front wheel camber mainly accelerates the wear of the shoulders, that is, partial wear; too small and too large of the front wheel toe is mainly to accelerate the wear on the inside and outside of the tire.

3. Pay attention to your driving style.

In addition to handling the situation, the driver should choose to drive on the road, avoiding sharp stones, glass, metal and other objects that may puncture and scratch the tire, and avoid adhesion and corrosion of chemical spilled substances on the tire. When driving on roads with large arches, try to center as much as possible to reduce the increase in tire load on one side and uneven tire wear. Under normal circumstances, tire life is reduced by 30% when overloaded by 20%, and tire life is reduced by 50% when overloaded by 40%. In addition, sharp turns, emergency braking, high-speed starting, and rapid acceleration will all affect the tire damage. Avoid when driving.

The status of tires in various parts of automobiles is very important, which greatly affects the driving performance of automobiles. The service life of tires directly affects the transportation economy.

1. Selection and installation of tires

The correct installation of the tire is directly related to the life of the tire, especially when replacing it with a new tire. Tires with different types and patterns must not be mixed arbitrarily due to the actual size and load capacity of each tire. In addition, if you are not yet fully aware of the tire replacement skills, we recommend that you still go to a professional tire shop or a vehicle special repairer for replacement.

2. Working pressure

If the tire pressure is too low or too high, it will affect the life of the tire. If the tire pressure is too low, its radial deformation will increase, and both sides of the tire wall will be deformed excessively, which will cause the wear of the crown and shoulders, which will increase the temperature of the tire and seriously reduce the tire's service life.

If the tire pressure is too high, the rigidity of the tire increases, the deformation and the ground contact area decrease, which increases the unit pressure in the middle of the tread and increases wear and tear. Abrasion occurs in the center of the crown, affecting comfort and reducing tire life. The test proves that if the air pressure is increased by 25%, the tire life will be shortened by about 30%.

3. Tire load

The greater the load on the vehicle, the shorter the life of the tire. This is beyond question. Especially in the case of overload, it is more prominent. Tires produced by regular tire manufacturers are marked with a load index. Tires should be used within the maximum load corresponding to the specified load index.

4. Driving speed

The tires produced by regular tire manufacturers are marked with a speed grade index. Tires should be used within the maximum travel speed corresponding to the specified speed class index.

5. Tire temperature

During the running of the vehicle, the tire temperature is increased due to stretching, compression and friction. Excessive temperature is likely to exacerbate tire wear or even cause a flat tire.

6. Chassis condition

The parallelism of the front and rear axles, the alignment of the four wheels, the working conditions of the braking device, and the technical conditions of the other components of the chassis will affect the life of the vehicle tires to varying degrees. In the event of a serious traffic collision, the owner must drive the vehicle to a professional maintenance station to check and adjust the chassis condition.

7. Road conditions

If the vehicle is driven on gravel or rough roads for a long time, the tire life will definitely be reduced. This is no exception for off-road tires.

8. Driving habits

This is a factor directly related to the owner. Excessive starting, sudden steering, emergency braking, high speed driving in poor road conditions, frequent ascents and crosses, and tire scraping obstacles when parking will cause severe tire wear, which will reduce the tire life.

9. Tire maintenance

Timing of tires in a timely manner, selection of appropriate tire patterns, routine maintenance, regular inspection of tire pressure, timely repairs and frequent digging of stones and foreign objects in the tire patterns are all important factors to extend tire life.

10. Vehicle maintenance

Many auto maintenance experts say that vehicles need to be repaired in three minutes and maintained in seven minutes. Don't wait for a breakdown to drive to a repair station for repairs. The regular maintenance of vehicles is also closely related to the extension of tire life. Regular inspections and maintenance of four-wheel alignment, steering knuckles, wheel bearings and suspension systems are essential.

Tires are the foundation of a car.

1. Improve the understanding of tire safety, usually check more tires, especially before high speed, be sure to do a full and detailed inspection, in addition to tire pressure, also observe whether there are cracks on the side of the tire, tread wear status The hidden dangers should be eliminated in time.

2. Regularly adjust the wheel balance, the wheel imbalance exceeds the standard, and high-frequency swing will occur when driving at high speed, causing tires to wear away, which is not conducive to driving safety. After the tire is repaired, the dynamic balance detection adjustment should be performed. The tire unilateral dynamic balance detection value should be less than or equal to 40 grams.

3. Carry out tire rotation on a regular basis. In order to maintain uniform tire wear on the same vehicle, tire rotation should be performed every 5000 kilometers and four-wheel alignment should be performed every 5000 to 10,000 kilometers to avoid abnormal excessive tire wear. It is not allowed to install tires of different models or large differences between old and new on the same axle.

Don't choose "medium" for tires

"" Generally in cities, such as Beijing, manufacturers are equipped with relatively modest 'season tires'. "Manager Liu, a professional car dealer, told reporters that indeed, for family cars, manufacturers will first Considering the comfort, economy, and drainage of the vehicle, that is, the safety of the rainy day, the second is the handling and grip, so this will happen: all aspects of the performance of family car tires can be justified, but not all Best of all, the overall performance is quite modest. However, in theory, the use of tires should be dry tires for sunny days, water tires for heavy rain, wet tires for light rain, and snow tires for snowy days. These tires have different materials and patterns, and are based on different climates. Features and special designs, although they perform well in their respective places of use, but for ordinary car owners, the ability to use tires in such a professional way is really beyond expectations.

The cars sold in the auto market are mainly equipped with Goodyear, Michelin, Hankook, Kumho and other brands of tires. Like domestic Passat, they are equipped with Goodyear's NCT5 series tires. Fukang uses Goodyear EAGLEGA series. The Accord uses Michelin, POLO uses Han Thai, and Shanghai Maple uses Kumho tires. Each type of tire has its own advantages, of course, its product series are also divided into high, middle and low grades, such as Goodyear's F1 series is the highest-end series, Michelin has PILOTSPORT series is also a professional competition for professional motorsports tire. In short, tires are both indispensable "flying shoes" for cars and should be valued by you. At the same time, you can choose them based on your preferences and needs.

Always measure tire pressure to eliminate hidden dangers

During the use of tires, tire pressure is a very important indicator. It is necessary to ensure that the tire pressure is consistent with the manufacturer's requirements. Otherwise, whether the tire pressure is high or low, it will cause great damage to the tire life. If the air pressure of the tire is too high, the pattern in the center of the tire tread will be more worn than the patterns on both sides. When the air pressure of the tire is too high, the contact area of the tire with the ground is small. The car accelerates and leaves part of the tire on the ground. When returning to the ground, deformation will occur due to acceleration, which will cause fluctuations. In this way, not only the tire resistance increases, which affects the acceleration performance of the car, but also causes steering wheel vibration and deviation. When the air pressure is too high, when it encounters sharp objects such as nails and glass on the road, it is easy to get into the tire and even cause a flat tire. Excessive external air pressure will also reduce driving comfort, and the vibration absorbed by the tire itself will be reduced, which will indirectly affect the life of other parts. In addition, the tire pressure is too high, the grip will decrease, and the fuel consumption will increase accordingly. If the air pressure is too low, it will increase the amount of movement in various parts of the tire, cause abnormal heating of the tire, reduce the function of the cord and rubber, cause delamination or excessive friction between the broken cord and the rim, causing damage to the bead site. Abnormal wear.

When driving, as the tire pressure drops, the friction between the tire and the ground doubles, the tire temperature rises sharply, the tire becomes soft, and the strength drops sharply. In this case, if the vehicle is driving at a high speed, it may cause a flat tire. In addition, the tire pressure is insufficient, the friction coefficient with the road surface will increase, and fuel consumption will increase. In short, it s a sentence. If the air pressure is high, it s not low. It must be right. When you drive, it is best to pay attention to the tires of your car. It is best to buy a domestic tire pressure gauge and measure it every week. To eliminate hidden dangers in the bud state.

Wear marks should be scrapped if exposed

As a consumable, tires need to be replaced after a period of use. First of all, every ten thousand kilometers of the car, the front and rear wheels should be reversed according to the diagonal position, because domestic cars are basically driven by the front wheels. The front wheels are responsible for both steering and driving the whole vehicle, which will cause the wear of the front and rear tires. The degree is different, and the wear of the tire is also related to the distribution of the weight of the vehicle. The tire position change greatly helps the tire to wear evenly. Tires with different specifications, structures, and abrasion resistance have a great impact on the handling performance and stability of the vehicle. In addition, tire replacement should be carried out at a professional service station. It is best to perform four-wheel alignment again after changing tires. Although this is not mainly for tire maintenance, it is still very beneficial for the entire vehicle.

Tire wear must be discarded to a certain extent. Generally, it should be scrapped when the wear marks on the tread are exposed. Ordinary tires are about to be scrapped when they drive about 80,000 kilometers. However, many people think that the pattern only needs to be replaced. In fact, it is not true. When the road is wet and slippery, if the car with severe tire wear is used for a long time, the steering wheel and brakes will almost completely fail. If it is dangerous to step on the brakes at this time, the correct way is to hold the steering wheel with both hands and gently step on the brakes to reduce the speed.

Also, have you ever messed up with a replacement tire? Don't worry, you must also have certain skills when changing the spare tire: do not replace the tire on uneven roads or slopes. When disassembling the tire, place the brake pads on the outside of the tire at the diagonal position of the tire to prevent the car from moving. Put the brake on and pull up the hand brake. Using a wheel screw wrench, turn the screw to the left about a half turn, use a jack to lift the car, confirm the correct position of the jack, and then replace the tire. Tighten the screw nut and the screw together, and then put the jack tire on the ground, and then tighten each screw nut one by one diagonally. After changing, check whether the tire air pressure is balanced. When it's okay, you can practice to be prepared.

In addition, there is a problem that many people ignore, which is the life of the tire. The international definition of the life of the tire is generally three years, which means that even if it is a brand-new tire, it will be left for 3 years. Not available anymore. In addition, in tire repair, we must find a professional shop for hot repair. Note that it must be hot repaired. Otherwise, it is easy to cause the belt layer and other parts inside the tire to age and form bulges, posing a threat to driving safety. After repairing, you can go on the highway, but you must pay attention to installing the repaired tires on the rear wheels. Of course, if there is a problem in the non-repairable area such as the sidewall, the tire must be discarded and never used again.

First, because the spare tires are used less frequently, they are all different from each other in the degree of wear, so

The growth rate of China's rubber industry has further slowed down, the growth rate has dropped below 10%, while the past growth rates have been 20% -30%. Although the industrial growth rate is declining, the overall development of the rubber industry is tending to be stable. According to the data of "2013-2017 China Tyre Tyre Industry Market Survey and Investment Consulting Report" released by China Business Information Network: In August 2012, China produced 73.619 rubber tire tyres, a decrease of 1.78% year-on-year. From January to August, the output of rubber tire tyres nationwide reached 574 million, a year-on-year increase of 4.19%. Among them, the output of radial tire tyres in China reached 280 million, an increase of 10.16% year-on-year, accounting for 49.07% of the total national tire tyre production.

Judging from the output of various provinces and cities, Shandong Province is China's main tire production area, accounting for more than 40% of the country. From January to August 2012, the output of rubber tire tyres in Shandong Province reached 239 million, a year-on-year increase of 14.17%, accounting for 41.62% of the country's total output. Followed by Jiangsu Province, Zhejiang Province and Guangdong Province, which accounted for 12.89%, 11.68% and 6.67% of the total output, respectively.

The EU Tire Labeling Law will be officially implemented on November 1, 2012. The regulation requires that car tires, light truck tires, truck tires, and bus tires sold in the European Union must be labeled to indicate the tire's fuel efficiency, wet road grip, and road noise level. The core of the tire label system is to promote green tires. For China's tire industry, one side is the good news of the expiration of the US special insurance case, and the other side is the impact and test of the EU Green Tire Labeling Act. The focus of China's tire development is to realize the industrialization of green tires. Regardless of whether it is a "label system" or other technical trade barriers, it emphasizes the fuel and energy consumption of tires, and improves the energy saving and environmental protection of products and product performance.

Development advantages of the automotive tire industry

First, our country

After a long period of use, car tires will definitely be damaged. It is inevitable to buy new car tires, but how should car owners choose car tires ? What are the car tire purchase tips? I do nt know everyone Do you know. This article will explain how to choose car tires. I hope that car owners will master car tire buying skills.

Identifying the tire specifications is the first step in how to choose a car tire. There will be this mark on the edge of the tire; and these numbers mark the meaning of the tire width, flat ratio, wheel diameter, load index, only With these data in hand, you can buy the right tires; of course, if you have nt read it yet, you can go to the place where you sell the tires and let the other person teach you. It is also a good way to master the car tire buying skills.

Tire pattern is also one of the car tire purchase tips. The pattern of the tire is not only good-looking, it is a good thing to prevent your car from slipping on the ground. Different patterns have different adsorption and drainage forces on the ground, and the patterns of tires on the market are also divided into symmetrical patterns and asymmetric patterns. These two are also functional but not the same in terms of installation. Tyres with symmetrical patterns can be installed at random regardless of inside and outside. However, for tires with asymmetrical patterns that have relatively good gripping and drainage forces, they must be installed clearly inside and outside. If it is reversed, it will have the opposite effect. I don't know if you understand this car tire buying skills?

At the same time, the tire cross section is also one of the skills we need to master the car tire purchase skills. Different tires have different cross sections, some are more square and some are more smooth. Compared with tires with smoother cross-sections and smoother tires, due to the effect of friction, the tires' cross-section is slightly inferior in terms of grip.

When buying car tires, you must understand that each tire has a different speed level. When buying, you must know this data clearly. You cannot drive the vehicle at this speed, otherwise it is easy to cause a car accident; and the same, Tires also have a load index. If it exceeds this index, I believe that everyone can guess the consequences if I don't say that. In the car tire purchase skills, these two points should not be ignored by all drivers.

1. Tread loss is close to the wear mark

Any brand of tire will have a wear mark on the bottom of the tread groove. The wear mark height of general car tires is 1.6 mm (this height is also the legal minimum tire groove depth), and the wear mark height of truck tires is 2.4 mm. Some car owners believe that as long as the tire is not broken, the tire pattern will continue to be used even after it is worn out. Such old tires are actually very dangerous: when it encounters wet roads, the tread pattern cannot completely drain the water under the tire. It is easy to cause the vehicle to get out of control.

2. The tire is cracked or damaged.

In the daily use of the car, the tire may be stuck by foreign objects, or accidentally hit the road teeth, which will cause the tire to be damaged. Damaged tires include cracks in the tread, bulging of the tread, lack of tread rubber, severe side wall wear, and tires being repeatedly pierced by foreign objects. Especially the bulge, the tire may burst at any time. As long as these tires are found to be damaged, the owner must go to a professional tire shop as soon as possible to check the tires of his car and replace them in a timely manner.

3. Tire life expires

Even if the owner usually drives smoothly, how good the road conditions are, and how to maintain the tires in place, the tires will age over time. The useful life of a tire is usually about 5 years. After this life, the tire will begin to age. The main manifestation of tire aging is surface hardening, followed by turtle cracks. Aging tires will lose their due elasticity. Continued use will result in tread deformation and the risk of puncture.

The Ministry of Finance and State Administration of Taxation reported on November 28, 2014 that, after research and approval by the State Council executive meeting, China has adjusted the consumption tax on some products such as refined oil products since November 29. Among them, the unit tax on gasoline consumption tax has increased by 0.12 yuan / liter The diesel consumption tax was increased by 0.14 yuan / liter. This is the first time that the refined oil consumption tax has been adjusted since the reform of the refined oil tax in 2009.

This consumption tax adjustment is a set of combination punches. In addition to moderately increasing the consumption tax on gasoline, diesel and refined oil such as naphtha, solvent oil, lubricants, fuel oil, aviation kerosene, etc., it also includes the cancellation of the cylinder capacity of 250 ml (excluding ) Consumption tax on small-displacement motorcycles, car tires, and alcohol; cancellation of consumption tax on leaded gasoline for vehicles; uniform consumption tax on unleaded gasoline; cessation of collection of refined oil price adjustment funds, etc., implemented on December 1. ^[1]