Buy tires, consumers need to polish their eyes

At the annual CCTV 3-15 party, Kumho Tire was exposed to extensive use of recycled rubber. It is reported that some defective semi-finished products in the tire manufacturing process will be used again in new materials. In order to ensure the quality of the tires, the tire industry has established strict operating standards, which stipulate that only a small amount of back-mixed rubber is allowed in the manufacturing process. However, the standard specifies a set, but Kumho Tire actually operates another set. After a large amount of doped back rubber, the quality of the tire is bound to decline. Over the past few years, there have been a lot of rumours about Kumho Tire's easy use of drum kits. At present, it may not be as simple as "Driver misuse." How to choose a tire product, the knowledge here is getting deeper and deeper. Read the tire language

It is very important to select the tire and observe the logo on the tire. Under normal circumstances, the owner will understand the size of the tire logo, but this is just the most basic tire common sense. The most important thing is that the owner must buy tires to understand the tire production time and tire "CCC certification" logo, the two signs is the most important role is to protect the quality of tires purchased by the owner. The delivery time of ordinary tires is marked on the third or fourth grid or near the back of the tire Dot. It consists of four digits, such as “4709”, which indicates that it was shipped in the 47th week of 2009. Under normal circumstances, the rubber on the tire will be aged after 3 to 5 years, so learn to view the factory date, you can avoid buying back expired products.

Many car owners are very concerned about the tire's wear resistance. Understanding the tire's wear resistance is mainly through the observation of the tire side of the "TREADW EAR" and wear coefficient. For example, a tire with a wear rating of 400 may have twice the life of a tire with a wear rating of 200. In general, tires with a wear resistance of more than 250 can be regarded as relatively long-lived tires. However, how long it takes for a specific tire to be used cannot be accurately predicted. Because it depends not only on the quality of the tires, but also on the road quality, personal driving habits, tire inflation pressure, tire positioning, tire transposition frequency. The tire wear rating is only a reference point, showing the comparison of life between different tires on the government-specified tire wear test road. Tire wear levels cannot predict the life of a particular tire.

Must match the model

The family car chooses the tyre first to look at the specification, the different model has the different specification tyre. According to national regulations, the same axle must be assembled with the same specification, the same structure, the same brand and the same pattern of tires produced by the same manufacturer, otherwise the safety of the vehicle will be compromised. Four-wheel drive off-road vehicles should be the same, and not only require four tires of the same specifications, even the tread pattern should be the same to ensure traffic safety.

Some owners may retrofit tires, but they tend to ignore one thing: the height of tires with different sizes. For example, after the 195/65R15 tires were upgraded to 16 inches, the 205/55R16 tires should be matched to maintain the same tire height. If the heights are not the same, there will be inconsistencies in driving, which will not only fail to exert outstanding performance but will, on the contrary, be twice as effective, and will also cause hidden dangers for the driving safety of the owners.

The choice of tires also considers that their speed levels must match the maximum speed of the car. There is a maximum speed parameter on the tire to tell consumers what the maximum speed the tire can withstand. The letter H for the speed class means a speed of up to 210 km/h, V 240 km/h, W 270 km/h and Y 300 km/h. If the driver’s vehicle can reach a top speed of 180 km/h, it is obviously unsafe to choose a tyre with a maximum speed of 160 km/h. Experts recommend that you choose tires that are higher than the maximum speed of your car to ensure safety. If you do not know the maximum speed of your own vehicle, it is advisable to buy the tires according to the original specifications.

The pursuit of a healthy life requires not only low-fat, low-salt, low-sugar, but also low-carbon. In pursuit of a low-carbon life, buying tires also has a coup. Owners can choose high silicon-containing tires. The benefit is that high-silicon tires can significantly reduce rolling resistance during driving, reducing energy consumption and vehicle exhaust emissions. Many relevant tests have proven this. . When buying tires, owners should take the initiative to confirm with the sales staff whether the selected tires have adopted high silicone rubber technology.

Selection of tires based on demand

To buy tires, tire treads are an important part of your life. Owners generally choose tires, which are prone to misunderstandings: patterns only play an aesthetic role. In fact, the tread pattern is an important aspect of tire performance. Different car owners have different requirements for driving. No tire can cover the overall performance. Different tread patterns have different performances. Therefore, you should buy tires with your own needs.

The general pattern is divided into symmetrical patterns, asymmetrical patterns and single-oriented patterns. Owners need to understand the performance of various patterns, such as balanced performance of symmetrical pattern tires, but in terms of handling and comfort, not as asymmetric pattern tires. Of course, if you choose a single-patterned tire, the braking performance of the vehicle will be significantly improved.

In addition, the tire should be selected based on the driving environment or driving habits of the vehicle. If vehicles are often used for off-road sports in mountain roads, mud and other environments, strong traction tires should be selected to enhance vehicle traffic. If the vehicles are often driving on urban roads, then tyres with good comfort and good maneuverability are more suitable. In the winter snow-covered road, it is best to choose the winter ice tires (including ice tires ICETY RE and snow tires SNOW TYRE) to ensure the grip of the tire when touching the snow and ice ground, avoid the smooth surface There have been some unexpected accidents. For the current spring, due to the abundant rainfall, the owner can consider selecting more tires with longitudinal patterns to improve drainage performance. If you are blindly pursuing the aesthetics of the tire pattern, it is difficult for the owner to choose a tire that is truly suitable for his own needs.

Beware of defective products

If we say that in the process of tire purchase, it appears that Kumho's situation of doping over-returned gels can be identified. This is a thorny issue. In response to a reporter’s inquiries, several tire experts stated that it is difficult for the naked eye to analyze this flaw if it does not pass the inspection of professional instruments. How can consumers avoid the move? Experts suggest that we should follow the principle of "a penny and a payment." In principle, even in the same brand, high-end products generally have a relatively low probability of cutting corners. The obvious example is that most of the tyres that Kumho had complained about with the bulge were concentrated on the low-end OEM tires.

In addition, the tire quality problems exposed by the “3.15” party reflect the current domestic weaknesses in the supervision of tire quality. So for the extra cautious consumer, when determining the tire brand and model, you may wish to choose the same type of tire produced in foreign countries. Of course, there are many domestic tires that emphasize the product's adaptability to the domestic environment, and the choice of imported tires does not have this improvement. Therefore, this suggestion is for reference only.