What do kg/cm2 and bar mean on a tire pressure gauge?

[DeIsabella]

Tire pressure gauge kg/cm2 and bar are both units of tire pressure. The specific explanations are as follows: In addition to bar, tire pressure units also include kpa (kilopascal), psi, and kg/cm2 (kilogram pressure). The conversion formulas between them are: 1bar=100kpa=14.5psi=1.02kg/cm2. Relevant information is introduced as follows: Tire pressure gauges can generally be divided into three types, namely pointer-type tire pressure gauges, digital tire pressure gauges, and alarm-type tire pressure gauges. The latter two can directly display tire pressure through values or alarms, and their principles are relatively simple. The more complex one is the pointer-type tire pressure gauge, which requires reading the tire pressure through the value indicated by the pointer on the dial.

[IkerAnn]

When inflating my car tires, I often see the units kg/cm² and bar on the tire pressure gauge. kg/cm² actually means kilograms per square centimeter, representing the pressure, equivalent to how many kilograms can be supported per square centimeter. Bar, on the other hand, is an internationally recognized unit of pressure, more commonly used in Europe and America. These two units are almost the same in value, with 1 bar approximately equal to 1 kg/cm². So, if you see 20 kg/cm², it's roughly the same as 20 bar—no need to worry about confusion. Having the correct tire pressure is essential for safety and fuel efficiency. I always follow the recommended values in the car manual, such as most cars suggesting around 2.5 bar. Too low tire pressure can lead to blowouts, while too high increases fuel consumption and tire wear. Don’t forget to check it monthly with a simple tire pressure gauge—safety first!

[Braxton]

I've been driving for almost ten years and I'm very familiar with the kg/cm² and bar units on tire pressure gauges. kg/cm² stands for kilograms per square centimeter, while bar is the standard unit of pressure. Their values are essentially close, with 1 bar approximately equal to 1.02 kg/cm². In practical operations, they can be treated as equivalent, for example, setting it to 2.0 bar is fine. Maintaining accurate tire pressure is crucial. If it's too low, the tire sidewalls wear out faster, and high-speed cornering becomes unstable; if it's too high, it affects comfort, making bumps on rough roads more pronounced. I use a digital tire pressure gauge that can switch between units, and I prefer using bar for consistency. Regularly checking tire pressure can also save a lot on fuel costs and extend tire life. My experience is to check it once every quarter.

[SanSilas]

As a frequent road tripper, I'm very familiar with tire pressure units kg/cm² and bar. kg/cm² stands for kilogram-force per square centimeter, while bar is a widely used unit. 1 bar is roughly equivalent to 1 kg/cm², with minimal numerical difference. It doesn't matter which unit your tire pressure gauge displays - the key is to inflate to the manufacturer's recommended value, typically 2.2-2.5 bar for compact cars. Incorrect tire pressure poses significant risks: too low accelerates tire wear and increases fuel consumption; too high reduces traction, especially making the car more slippery in rainy conditions. I recommend keeping a portable tire pressure gauge with easy unit conversion, and always checking before each trip.