What does tire bar mean?
2 Answers
The 'bar' displayed during car tire pressure monitoring refers to the unit of pressure measurement, megapascal, which represents atmospheric pressure, commonly referred to as air pressure. Below are the appropriate car tire pressures according to the international GBT2978-2008 standard requirements: 1. Standard tire pressure: 2.4-2.5 bar; 2. Reinforced tire pressure: 2.8-2.9 bar; 3. Maximum tire pressure: should not exceed 3.5 bar. Here are some precautions: 1. Air pressure is critical to tire life; both too high and too low will shorten the tire's lifespan. Low pressure increases tire body deformation, leading to cracks on the sidewalls, flexing movements, excessive heat generation, rubber aging, fatigue in the cord layers, and cord breakage. It also increases the tire's contact area, accelerating shoulder wear. 2. High pressure causes excessive stretching and deformation of tire cords, reducing the tire body's elasticity. This increases the load on the car while driving, potentially causing internal cracks and blowouts upon impact. Additionally, high pressure accelerates tread wear and reduces puncture resistance.
When I first started driving, I often heard people mention 'tire bar,' which actually refers to the unit of tire pressure called 'bar.' One bar is approximately equal to 100 kilopascals or 14.5 psi, and it's an internationally recognized pressure standard. Tire pressure is crucial when driving—low pressure can lead to blowouts and increased fuel consumption, while high pressure makes the ride bumpy and reduces comfort. I make it a habit to check my tire pressure monthly using the onboard tire pressure gauge, always keeping in mind the recommended values from the vehicle's manual. Nowadays, most cars come with tire pressure monitoring systems that provide alerts, which is very convenient, but don’t forget to manually verify it periodically. Maintaining the right tire pressure not only extends tire life but also improves fuel efficiency by a few percent. Safety is another critical factor, especially before long-distance trips—always check your tire pressure. I hope these tips are helpful to everyone.
