Why is the tire pressure low in a new car?
3 Answers
New cars may experience low tire pressure due to the following reasons: The vehicle has been parked for an extended period, causing the tire pressure to decrease. When a car leaves the factory, the tire pressure is typically set closer to the upper limit of the safe range. However, as the car remains stationary over time, the tire pressure will naturally drop. Some manufacturers intentionally lower the tire pressure to prevent excessively high speeds. Since it's a new car, even experienced drivers need an adaptation period. During this time, reducing the tire pressure slightly helps prevent potential traffic hazards caused by high speeds. Tire damage. Although rare in new cars, it's not impossible. There might be an issue with the tires from the factory, or the tires could have been punctured during use. When the low tire pressure warning activates in a new car, it's essential to thoroughly inspect the tires for any damage. Reasons for abnormal tire pressure: Generally, the system will issue a warning if the pressure falls below 1.8 bar or exceeds 3.0 bar. In such cases, tire inspection and pressure adjustment are necessary. The tire pressure monitoring system hasn't been reset. After inflating the tires, if the tire pressure reset isn't performed promptly, the monitoring system will continue to display the previous data, causing the tire pressure warning light to illuminate. Simply performing a tire pressure reset will resolve this issue. Damaged tire pressure sensor. The tire pressure sensor, which monitors tire pressure, is installed inside the tire and connected to the inflation valve. If the sensor is damaged during driving (e.g., by hitting a curb), it can trigger the tire pressure warning light. In case of sensor damage, the only solution is to replace it with a new one.
I noticed low tire pressure shortly after buying my new car. This is usually caused by incorrect factory settings, as the pressure naturally decreases over time during transportation from the factory. It could also be due to significant temperature changes after parking, where thermal expansion and contraction lowers the pressure. Check the label on the door frame for the recommended tire pressure, use a portable gauge to measure it, and if it's low, fill up at a gas station. Long-term low tire pressure is dangerous—it makes driving unstable, increases the risk of blowouts, accelerates tire wear, and wastes fuel. Developing a habit of checking tire pressure monthly can save a lot of hassle. After getting a new car, a full inspection, including tire pressure, is essential to ensure road safety.
As someone who frequently pays attention to vehicle details, I believe there are several reasons for low tire pressure in new cars. Inaccurate pressure settings during manufacturing are quite common; bumps during transportation can cause slow leaks; and temperature drops during seasonal changes can also reduce tire pressure. Ignoring this issue can lead to faster tire deformation, increased rolling resistance, and a fuel consumption rise of over 5%, costing you more money in the long run. I recommend immediately using a tire pressure gauge to check the standard value (usually 230-250 kPa). If the pressure remains low after inflation, inspect the valve or wheel hub. Maintaining correct tire pressure can extend tire life by several years, reduce the cost of frequent replacements, and improve driving comfort.
