[Car basic knowledge]Measure tire pressure by feeling the car while driving

The weather is getting hotter and the seasons change. Many car owners find that they can be used in winter.tire, But it can no longer be used now, or it needs to be patched and used again. In fact,tireThe air pressure always changes gradually with temperature, load and time. Whether the tire pressure is moderate or not is not only related to the driving, comfort and economy, but also related to driving safety. Bikers may wish to adjust the tire pressure of your car in time according to the standards set by the factory. It is always the best and most accurate method to use a barometer to check the tire pressure when the car is cold. However, it is impossible for riders to measure the tire pressure every day. Besides, it is inconvenient to measure the tire pressure during daily driving. However, accidents such as the tire being pierced by nails can happen from time to time. Therefore, learn to "detect" the tire pressure by feeling. It is very necessary whether it is suitable or not. The following is my experience in practice, which can be used as a reference for riders. First look at the imprints. The best use of the tire is that the entire ground tire width is basically pressed against the ground, and the tire pressure at this time is the most suitable for the current load. The simple judgment method is: when the car is driving on a dusty road, you get out of the car and look at the dust marks on the four tires?? If the marks are just (or close to) covering the boundary line between the tire contact surface and the side ( Shoulder), it proves that the air pressure is proper, the tire contact area is the best, and the grip is the best. If the dust-covered surface is far away from this crossover line (such as 1cm or more), it means that the tire pressure is too high, the tire grip is small, the stability is also reduced, and the middle wear of the tire will be greater than the edge. In fact, if the tire pressure is too high, you will not enjoy the 195 tire width, but the 185 or even narrower tire effect. Conversely, if the mark crosses the edge line of the tire, it means that the tire pressure is low, which not only increases fuel consumption and weakens the tire rigidity, but also increases the deflection of the tire when rolling, which will increase heat generation and damage the sidewall and steel wire. Caused a low pressure puncture. The second is to listen to vibrations. When the tire pressure is high, you can clearly feel that the car body bumps and jump intensified during driving, and the interior of the car may also produce frictional noise; on the contrary, when the tire pressure is low, you will feel that the bumps are heavy and the amplitude is too large when passing through the rough road. Long (as if shaking). You can also sense the direction and fuel consumption.whensteering wheelWhen the rotation becomes heavier, the tire pressure is generally low (front wheel); on the contrary, if the direction feels light and slippery, the tire pressure is high (front wheel). In addition, under similar vehicle conditions, speed, temperature, and road conditions, fuel consumption has increased by 0.5-1l/100km than before, indicating low tire pressure. Finally, look at the manipulation. At high speeds, the car body has a sense of fluttering, turning at a right angle at 50-60km/h has a sense of drift, and the emergency braking distance is extended, indicating that the tire pressure is high. Related: ·How to reverse the car——"口"shaped parking space
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