How to Determine Car Tire Pressure?

[Quinn]

Determine based on the measurement results of the tire pressure gauge. Below is an introduction to tire pressure: 1. Check the recommended pressure value: The manufacturer's recommended pressure value can usually be found in the following places: the vehicle user manual, the label near the driver's door (B-pillar), the drawer next to the driver's seat, or the fuel tank cap door. 2. Cold tire pressure: The manufacturer's recommended tire pressure refers to the cold tire pressure. It is defined as follows: measure the pressure after the vehicle has been parked for at least three hours or if the tires have not been driven more than 2 kilometers. If you can only measure the tire pressure when the tires are hot, subtract approximately 0.3 bar (=4 psi) from the measured pressure to obtain the cold tire inflation pressure.

[DeEsther]

Checking tire pressure is actually simple yet crucial. I often start by checking the car's Tire Pressure Monitoring System (TPMS), which comes standard on many new vehicles. There are two types: direct systems have sensors in the wheel hubs that send real-time pressure data to the dashboard, while indirect systems use ABS wheel speed sensors and trigger a warning light if significant differences are detected. Of course, manual methods are reliable too—a tire pressure gauge costs just a few dollars and provides the most accurate reading when tires are cold after the car has been parked for at least three hours. Unscrew the valve cap, press the gauge on, and take the reading, remembering to check all four tires. The standard pressure can be found on the door frame label or in the manual, typically around 2.5 bar for SUVs and 2.2 bar for sedans. Too low pressure affects handling, while too high makes the ride uncomfortably bumpy. More dangerously, prolonged underinflation accelerates wear and may even cause a blowout. I recommend checking monthly—it's a habit that saves fuel and ensures safety.

[DiJoy]

As someone who frequently drives long distances, I believe checking tire pressure should become a daily habit. The simplest way is to use the free tire pressure gauge at gas stations when refueling; if the machine shows a red light or the reading is too low, inflate immediately. Before driving, take a quick glance at the tires—if they look slightly flat or deformed, the pressure is definitely insufficient. While driving, if you feel the car is floating, struggling in turns, or experiencing a sudden increase in fuel consumption, these are warning signs. Remember, seasonal changes affect pressure—lower in winter and higher in summer, so check more often in areas with large temperature variations. Never ignore the TPMS warning light; buy a portable tire pressure gauge and keep it in the trunk for emergencies. This approach ensures peace of mind and prevents accidents.

[PaulRose]

To check tire pressure, manual measurement is the most reliable method. I prefer using a tire pressure gauge: after the car is parked and the tires are cold, remove the small cap from each tire's valve stem, press the gauge onto it, and read the measurement. The standard pressure is usually labeled on the door frame, such as around 2.4 bar; if it's too low, the tires can overheat and deform, risking a blowout at high speeds; if it's too high, handling becomes stiff and fuel consumption increases. Tire pressure gauges are affordable and easy to use, with reliable models available for just 20 yuan. Before driving, take a quick glance at the tires—if they look flat, the pressure is likely insufficient. Developing a habit of checking tire pressure monthly is crucial.