What does bar mean in a car?

[LaXavier]

On a car dashboard, bar is a commonly used unit of pressure, indicating the current tire pressure of the vehicle. Below is an introduction to related content: 1. Conversion: Generally, the recommended tire pressure for cars is around 2.5 bar, where 1 bar equals 100 kPa. 2. Units: Both bar and kPa are common units for measuring tire pressure in vehicles, and the tire pressure display is used to show the current tire pressure. 3. Lifespan: Both excessively high and low tire pressure can affect the lifespan of the tires. When the tire pressure is too low, the tire body expands, making the tire sidewalls prone to cracks. It also increases the tire's contact area with the road, accelerating tire wear. 4. Bar on the dashboard: Indicates low tire pressure. If the bar symbol appears on the dashboard, first check if the tire is losing air. Typically, the bar light will come on if the tire is slowly losing air, and you should immediately repair or replace the tire. If you're unsure whether the tire is losing air, you can simply inflate it and then monitor the pressure for a day to see if it remains stable.