Tire Maintenance: Safety & Longevity
As the only part of a car that contacts the ground, the condition of the tire is directly related to driving safety, fuel economy and driving comfort. Many car owners often neglect tire maintenance until problems such as tire blowouts and uneven wear occur. Mastering scientific tire maintenance techniques can not only extend the service life of tires, but also protect your travel.
Tire pressure monitoring: the first line of defense for driving safety
Tire pressure is the core factor affecting tire performance, and regular tire pressure checks are by no means optional. Ideally, it is recommended to conduct tire pressure tests at least once a month, and they must be checked before each long-distance trip.
When the tire pressure is too high, the contact area between the tread and the ground is reduced, and the pressure per unit area increases, which will cause excessive wear in the center of the tread. At the same time, the elasticity of the tire decreases, and the risk of tire blowout increases significantly when encountering bumpy roads or sharp objects.
If the air pressure is too low, the deformation of the sidewall will be aggravated, and too much heat will be generated during driving, which will not only increase the fatigue damage of the internal structure of the tire, but also increase the rolling resistance. The fuel consumption per 100 kilometers may increase by 5%-10%. At the same time, the bumpy feeling of the vehicle during driving will be significantly enhanced, affecting the driving experience.
It is very necessary to equip the vehicle with a set of accurate air pressure detection devices. Currently, there are many options on the market, such as pointer type, digital type and tire pressure monitoring system (TPMS). When using, please note that the tire pressure will fluctuate with temperature changes.
The value detected in the hot tire state will be higher. It is recommended to measure in the cold tire state (parked for more than 3 hours or driving distance less than 1.6 kilometers) to obtain accurate data. In addition, there are differences in the standard tire pressure values of different models, which are usually marked on the driver's side door pillar or fuel tank cap. When testing, it is necessary to strictly adjust according to the values specified by the manufacturer.
Four-wheel alignment and eccentric wear prevention: let the tires "work" evenly
Eccentric wear of tires is a common tire damage problem, and its causes are complex and diverse. In addition to abnormal tire pressure, inconsistent tire pressure on both sides will cause uneven force when the vehicle is driving, resulting in unilateral wear; loose, deformed or worn suspension system components will also change the wheel alignment parameters and cause eccentric wear of tires.
As the steering wheel, the front wheel of the car bears the steering and most of the braking force. The wear rate is usually faster than the rear wheel. If not handled in time, "tire eating" may occur, that is, the inner or outer side of the tire wears abnormally faster.
Regular four-wheel alignment inspection and adjustment is the key to preventing eccentric wear. It is recommended to perform a four-wheel alignment test every 10,000 kilometers or half a year. Adjustments should also be made in time after replacing tires, collision accidents, or when the vehicle feels that it is running off the track.
Professional four-wheel alignment ensures that the four tires are evenly stressed and maintain the best contact with the ground by adjusting parameters such as the wheel's caster angle, kingpin inclination angle, front wheel camber angle, and front wheel toe, thereby avoiding excessive wear.
When performing four-wheel alignment, you should choose a regular 4S shop or a qualified repair shop, use precise positioning equipment, and ensure that the adjusted parameters meet the vehicle manufacturer's standards.
Tread cleaning: the core function of protecting the pattern
The tread pattern is the "lifeline" of the tire, and its three core functions are indispensable: improving grip to ensure the braking and acceleration performance of the vehicle on dry and wet roads; reducing noise, dispersing sound waves through the pattern design to reduce tire noise during driving; increasing drainage, quickly draining water through the pattern grooves on rainy days to prevent slipping caused by the water film effect. However, during driving, the tread pattern is very easy to embed small stones, glass fragments, metal particles and other foreign objects. If not cleaned in time, it will bring many hidden dangers.
Small stones stuck in the pattern grooves for a long time will gradually wear the rubber at the bottom of the grooves, causing the pattern depth to become shallow, affecting drainage and grip. Sharp foreign objects may even pierce the tread and cause slow air leakage.
The correct method should be used to clean foreign objects from the tread: for smaller stones, you can use a key or a special cleaning tool to gently pry them out along the groove direction to avoid damaging the rubber with vertical force; if there are many stones in the groove, you can first reduce the tire pressure appropriately, use the elasticity of the rubber to loosen the stones and then re-inflate them to the standard pressure.
Special reminder: after passing through construction sites, rural dirt roads or muddy sections, be sure to carefully check the tread, clean up embedded foreign objects in time, and clean up the mud and sand attached to the sidewalls to prevent corrosive substances from long-term attachment and damage to the rubber.
Wear degree inspection: grasp the timing of replacement
The wear degree of the tire directly reflects its service life. Regular inspection of the wear condition can effectively avoid safety hazards. The tread depth is an important indicator. The national standard stipulates that passenger car tires must be replaced when the tread depth is less than 1.6 mm.
For daily inspection, you can use a special tread depth gauge, or you can use a simple method: insert the edge of a one-yuan coin into the tread groove. If you can see the chrysanthemum pattern on the edge of the coin completely exposed, it means that the tread depth is insufficient and the tire needs to be replaced in time.
In addition to the tread depth, you also need to pay attention to the wear pattern of the tire. If the tread has irregular block wear, wave wear or unilateral wear, it may be caused by suspension system failure, four-wheel alignment misalignment or abnormal tire pressure.
The cause should be checked and repaired in time. When cracks, bulges or scratches appear on the side of the tire, it must be replaced even if the tread depth is sufficient, because these damages will cause the structural strength of the tire to decrease, and it is very easy to cause a tire blowout accident.
In addition, there is a service life limit for tires. Even if the wear is slight, tires that have been used for more than 5 years should be professionally inspected. It is recommended to replace them for more than 8 years because the rubber will gradually age over time, and the elasticity and strength will decrease significantly.
Maintenance in special scenarios: Dealing with complex road conditions
Different driving environments have different effects on tires, and targeted maintenance measures need to be taken. In hot summer weather, the temperature of the tire will rise significantly after long-term driving, and the air pressure will also rise accordingly. At this time, you should avoid immediately parking the tire to deflate the tire. Wait until the tire cools down before checking and adjusting the air pressure. When parking, avoid parking the vehicle on sharp objects or oily places to prevent the tire from being scratched or corroded.
In winter, under low temperature conditions, rubber will become hard and brittle, tire grip will decrease, and tire pressure will decrease due to lower temperature. It is necessary to increase tire pressure appropriately to compensate for the loss of air pressure.
After driving on icy and snowy roads, the remaining ice and snow on the tread should be cleaned in time to avoid affecting the balance of the tire after freezing. In addition, when parking the vehicle for a long time, a flat and solid ground should be selected to avoid deformation of the tire due to long-term uneven pressure. It is recommended to move the vehicle once a week to change the contact position between the tire and the ground.
Daily use habits: the key to extending tire life
Good driving habits are essential for tire maintenance. When starting, you should accelerate smoothly to avoid stepping on the accelerator hard to cause tire slippage and wear; when braking, you should do it step by step.
Emergency braking will not only aggravate tire wear, but may also cause tire overheating; when turning, you should slow down in advance to avoid excessive lateral force on the tire when turning at high speed, causing damage.
When parking, try to avoid parking the tire on the edge of the curb to prevent the sidewall from being deformed due to long-term pressure.
Regularly changing the position of tires can make the wear more even. Generally, the diagonal change method is adopted, that is, the left front wheel is exchanged with the right rear wheel, and the right front wheel is exchanged with the left rear wheel. It is recommended to change the tire position every 10,000 kilometers. After changing the tires, it is best to check the four-wheel alignment to ensure that the force is normal after the tire position is adjusted. In addition, avoid overloading.
Overloading the vehicle will cause the tires to bear too much load, resulting in accelerated tread wear and increasing the risk of tire blowout. For every 10% overload, the tire life may be shortened by about 20%.
Tire maintenance is a systematic project that requires the owner's carefulness and persistence. From tire pressure monitoring to four-wheel alignment, from tread cleaning to wear inspection, every link cannot be ignored.
Developing good tire maintenance habits can not only reduce the cost of using the car, but also build a solid safety barrier for every trip. Remember, the more attention you pay to the tires, the more protection you will have when driving.
