Recently, I saw such a video in the car friend group, the story of the incident should be in the Macao Special Administrative Region, a Mercedes-Benz big G in the tire shortage of the driver still continues to drive regardless of the situation, and then the tire and the wheel hub disengaged, the wheel hub directly on the ground grinding, and then due to metal and ground friction caused by mars causing the vehicle to spontaneously combust, and finally the Mercedes-Benz big G was burned into an iron frame.
Looking at the screen I feel heartache, Mercedes-Benz big G This is the dream car of many people, because the tire is out of gas and led to scrapping, at that time our colleagues in the editorial team looked at it and couldn't help but sigh, badly stepped on a good car.
Now many new cars have been equipped with a vehicle tire compaction display function as standard, so when we use the car every day, we often find that the tire pressure value of the tire in the winter is small, the tire pressure value of the summer tire will be slightly higher, and when driving in the summer, the tire pressure value will gradually become higher and higher, and when going out to drive in the morning, the display is 2.4bar, and after driving for a period of time, it becomes 2.6 bar or even 2.8 bar, worrying that the tire pressure will not be easy to burst the tire, resulting in the vehicle out of control and so on.
Many may have checked on the Internet, the normal tire pressure value of the general family car is 2.3-2.5 bar, so some car owners will reduce the tire pressure when the summer weather is relatively hot, so that the tire pressure value of the vehicle after running up is about 2.3-2.5 bar, and the tire pressure may be 2.0 bar when the actual cold car.
This is very wrong
moreover
Very dangerous behavior!
How many bars should my tire pressure hit?
For the normal value of the vehicle tire pressure, generally refers to the tire pressure value in the cold car state, not the tire pressure value achieved after the vehicle runs up, according to the design of each car and the daily load, the corresponding tire pressure value is also different, such as Tesla's normal tire pressure value is about 3.0bar, and the tire pressure value of the general model is not the same. And how much tire pressure is appropriate for your car? In fact, generally inside the door or on the B-pillar door frame, the manufacturer has provided you with a standard answer.
Why lowering tire pressure is a very dangerous thing
Why reducing tire pressure is a very dangerous thing because when the vehicle is driving, the tire and the road surface will generate a lot of heat, and it will also be affected by the heat of the brake caliper and brake disc when the vehicle is braking, and this heat will be cooled by the wind when the vehicle is driving. If the tire pressure of the vehicle is insufficient, the contact area between the tire and the ground increases, and excessive heat will be generated for a long time, and it will not be able to dissipate heat in time and effectively, resulting in the phenomenon of melting tires or even fire, resulting in spontaneous combustion of the vehicle.
In fact, when driving, due to the rise in tire temperature, the gas in the tire will also rise relatively, resulting in an increase in tire pressure, but as long as it is in the ideal state of cooling, this little pressure tire is completely able to withstand, and do not worry too much, unless it is the tire rubber aging cracking, bulging, or the tire wall has scratches, etc., there will be safety hazards.
When you need to reduce the tire pressure
Many off-road vehicles in the heavy off-road and desert driving, in front of entering the non-paved road, will adjust the tire pressure according to the actual situation, reduce the tire pressure on the low adhesion road, can increase the tire and the ground force area, thereby enhancing friction, so that you can pass more smoothly.
In addition to off-road vehicles, if we drive an ordinary SUV or sedan, when driving on the beach or muddy road, when encountering the situation of "trapped car", you can also reduce the tire pressure slightly, and look for hard items such as stones, sand barriers, etc., which can enhance the adhesion of the wheels under the wheels, so that the vehicle tires can get better grip and get the vehicle out of trouble.