What is the standard value for tire pressure monitoring?
3 Answers
The standard value for tire pressure monitoring is between 2.3bar and 2.5bar. When the car is fully loaded (5 people), it is appropriate to adjust the tire pressure to around 2.5bar. For two people, a tire pressure of 2.3bar is normal. The standard pressure can usually be found in the vehicle's user manual, on the label near the driver's door (near the B-pillar), in the drawer next to the driver's seat, or on the fuel tank cap. When the tire pressure is below 75% of the standard value or drops by 30% of the standard value, the tire pressure monitoring system should issue an alarm. Driving is safe when the tire pressure is between 25% and 30% below the standard value listed on the vehicle's nameplate.
I've been driving for almost twenty years. I remember when I first bought my car, I specifically asked the 4S dealership about the standard tire pressure. They told me that for most sedans, it's usually around 32 to 35 psi, equivalent to 2.2 to 2.4 bar, but this isn't absolute—you should always check the label or manual in your car, typically found on the driver's door frame or fuel tank cap. I learned this the hard way—once I forgot to check, and the tire pressure was only 28 psi. While driving, I noticed the steering wheel felt heavy, fuel consumption kept increasing, and it accelerated tire wear. Since then, I've used a pressure gauge to check monthly, making sure to measure when the tires are cold. In summer, tires tend to expand, so I release some air to adjust; otherwise, driving at high speeds becomes risky. During regular maintenance, I also remind the technician to help calibrate it, ensuring driving safety and extending tire life.
I often help my friends with tire issues. When it comes to the standard values for tire pressure monitoring, it's not a one-size-fits-all number. Most family cars fall within the range of 220 kPa to 240 kPa, depending on the vehicle weight and tire type, while SUVs may require higher pressure. The key is not to adjust the pressure based on guesswork but to refer to the recommended values in the vehicle manual. Too low pressure can cause excessive wear on the tire edges, while too high pressure accelerates wear in the center and may even reduce traction. I've taught people a simple method: buy a digital pressure gauge, measure the cold tire pressure after the car has been parked overnight, and adjust accordingly. In winter, when temperature changes cause pressure to drop faster, check more frequently to prevent blowout risks. Never ignore the TPMS warning light—address it promptly for safety and fuel efficiency.
