Many car owners often let a car wash, or someone with no tire expertise, inflate the tire pressure to the wrong level, which can lead to unpredictable consequences.
Nguyen Minh (Hanoi) hands trembled when he opened the phone to call her husband, when he could not recover from the tire explosion phase. Minh inflates a tire in Hanoi at a car wash, looking at the tire pressure sensor screen, which says 2.4 “pounds”. 2.4 “weight” here is understood as 2.4 kgf/cm2, tire pressure unit.
After washing, Minh drove 50 km from Hanoi to Hung Yen to work, running at a high speed of 100 km/h on the highway. Hot weather causes the air to expand, the pressure in the tire increases and explodes, when it collides with a stone that is not too large, but sharp.
The car lost control and swerved toward the blown tire. Minh managed to regain his balance and pulled the car to the side of the road, but the tire was completely damaged with a long tear and a distorted rim. Right before the tire burst, Minh observed that the pressure level was sometimes up to 2.6.
Minh said he was lucky because the road was empty and the car didn’t roll over, otherwise “don’t know what could happen”. The tire was replaced by Minh’s husband two weeks ago, has not been slashed or cut anywhere, but exploded on the highway. Loss of nearly 2 million VND for tire replacement, 1.6 million VND and rim re-weighted for more than 300,000 VND. But more importantly, Minh’s life is safe.
Many car owners, like Minh, often do not have the habit of finding out how much pressure their tires are pumping, although this information can be easily seen in the sticker on the driver’s door. In this case, Minh’s car, the manufacturer advises to pump about 2.2 kgf/cm2 for the front tire.
Usually, many amateur tire technicians at car wash shops, or even mechanics at tire repair shops, habitually pump 2.3 or 2.4 kgf/cm2 for many different vehicles.
>> Meaning of parameters on car tires
If the pump is too inflated compared to the standard, combined with continuous running on concrete pavement, the hot sun will cause the pressure in the tire to increase, creating pressure on the tire wall. At this time, just a collision with a small object but a sharp edge can also cause the tire to be torn, causing a tire explosion.
According to experts, there are only a few cases where drivers should inflate more than usual by about 0.1 kgf/cm2, for example parking for a long time without moving, very cold winter or carrying more people. On the contrary, you should reduce tire pressure if traveling with few people, high temperature, or when you need to increase traction such as running on slippery, sandy roads.
Drivers should pay attention to the tire pressure parameters to ask the mechanic to inflate the level specified by the manufacturer. If the new driver has not yet clearly felt that the tire is under-inflated/under-inflated, a tire pressure sensor should be equipped. When moving, you should check the road and load to inflate the tires accordingly. In addition, there are many other tire parameters that are also very important, printed on the tire, the driver should actively learn and remember the meaning of these parameters.