Common knowledge about car tire maintenance. Very worn tires tend to slip. أداة الاختبار –

General knowledge about car tire maintenance: Tires are very worn and tend to slip

Tire health problems are often easily ignored by car owners, and acceleration, braking, lane changes and other actions performed by the vehicle while driving must ultimately pass through the tires. To be complete, tires are therefore linked to the performance and safety of the car. According to actual measurements, the braking distance between old tires and new tires can vary by up to 9.8 meters!

What are the differences in the performance of new and old tires in differentyour road conditions?

5-year-old tires are \"thin\"

During the process of using the car for many years, paint can be repaired, leather can be maintained and machines can be repaired... Wheels that are still exposed are weathered. . If anyone claims their tires are as shiny as new after driving 30,000-40,000 miles, don\'t think about it. It\'s basically bragging.

The reporter found a vehicle whose tires had not been replaced for several years. The tires on this vehicle were worn out. It was used for 5 years and traveled more than 90,000 kilometers . Calculated at 20,000 kilometers per year, the lights are still within the normal usage range. Although there are no obvious scars on the sidewalls, the tread has long lost its dark luster and is almost \"bald\", the original deep tread has almost been worn away and even part of the tread has reached the warning standard.

The tread of old car tires used for 5 years is almost worn out. The braking distance will become longer.

Symptom: slippage

The most intuitive symptom of severe tire wear is slippage.

The overtest team carried out 9 overtests for this set. A comparison test was carried out between used tires that had covered 10,000 kilometers and a set of new tires. When braking emergency was carried out at a speed of 100 km/h, the braking distance of new and old tires on dry and wet roads actually differed by 7-10 meters!

The exciting moment of the scene is still fresh in my memory. During the test, the \"big throttle start\" method was adopted for driving. Especially when testing on slippery surfaces, When the accelerator was pushed down, the old tires wobbled considerably from side to side due to lack of sufficient grip. If the reporter had not firmly grasped the It is difficult to stabilize the steering of the vehicle without holding the steering wheel. During each rounding process, the rear of the vehicle will slide sideways to the outside of the track and the front wheels will not be able to show a clear trajectory.

If the tire surface is wornGreat, this will make the car harder to control while driving.

When the vehicle was replaced with new tires, everything started to change. As the new tires greatly improved their grip and drainage performance, the final data was particularly gratifying. But the more important point is this: the reporter can still pass the same test items using more demanding driving methods.

After replacing the new tires, the abnormal noise disappeared

According to the owner of this experimental vehicle, the vehicle has traveled about 50,000 kilometers. When you turn it to the right, you will still hear a \"rumble\" at low speed. The car owner thought originally that there was a problem with the vehicle\'s bearings, but after inspection by the professional maintenance staff of 4S store, the cause was never found. But this time, after putting on new tires for experience, the abnormal noise disappeared.

Senior tire technicians said that because the car\'s four wheels had not been aligned for a long time, all four tires were overloaded and out of service, and some tires were even slightly deformed.Steps of different heights are the main culprits for abnormal noises.

Symptom: Noisy

Different tires have different characteristics, some are quieter and others are more wear-resistant. The most obvious manifestation of the different characteristics is tire noise.

The original tires of this experimental vehicle are strong and wear-resistant, and the tire noise is basically normal. During the test, with windows, audio system and air conditioningWith the power off, the highest noise level reaches 76.5 decibels while driving. After replacing four new tires, the rolling noise was reduced to 67.3 decibels.

Tire Care Recommendations

1. Make sure the tire pressure is normal. Check tire pressure at least once a month. Tire pressure in the cooling state, the pressure value is based on the parameters recommended by the vehicle manufacturer.

2. Avoid collisions. When tires encounter sharp objects such as potholes and steps, tire threads can break. This can range from bulges and deflation can cause serious tire punctures. Additionally, it is not recommended to continue using tires with bulges and cracks on the sidewalls, and they cannot be repaired.

3. Position and change position over time. If the tire is found to be damaged. In case of eccentric wear or vehicle vibration, the tire alignment should be checked; it is recommended to visit a professional repair station to have the tires rotated every 10,000 kilometers.

4. Pay attention to the use environment. Tires should be used while driving, parking, and be careful to avoid contact with oily, acidic, hydrocarbon and other chemical substances, and it is recommended to park the vehicle in a cool place to avoid premature aging of the tires.

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