What is the standard tire pressure for front and rear tires of a sedan?
2 Answers
The standard tire pressure for front and rear tires of a sedan is between 2.3 and 2.5. If the car is fully loaded (5 people), it is more suitable to adjust the tire pressure to around 2.5; for two people, a tire pressure of 2.3 is also normal. The recommended tire pressure should be based on the manufacturer's specifications, as the setting of tire pressure mainly considers vehicle factors such as the weight of the car body and the height of the chassis, and is not necessarily related to the brand of the tires. Tire pressure is the life of the tire. To ensure that the tire is in good working condition, it is first necessary to ensure that the tire pressure is correct and appropriate. However, it is difficult to control the tire pressure 100% accurately. It can be slightly higher but must never be too low. Seasonal factors should also be considered. Compared to winter, the tire pressure in summer should be slightly lower because the high temperatures in summer can cause the tires to heat up, and high tire pressure can easily lead to a blowout. In winter, the tire pressure should be slightly higher than in summer due to thermal contraction and expansion. However, no matter how it is adjusted, it should not exceed the manufacturer's recommended value by too much.
I remember last winter when my car suddenly started shaking violently on the highway—it turned out the rear tire pressure was too low, and it almost caused an accident. When I went to get it fixed, the mechanic told me that for sedans, the standard tire pressure is usually slightly higher in the front tires, typically between 30 to 35 PSI, while the rear tires might be 2 to 5 PSI lower, around 28 to 33 PSI. This is because the engine is at the front, so the front tires need to be firmer to support the weight. Not all cars are the same, though—you should check the owner's manual or the label on the door frame. Now, I use a tire pressure gauge to check every two weeks. In cold weather, tire pressure drops, especially before long trips, so it's crucial to measure accurately. Neglecting this can lead to faster tire wear and longer braking distances. Safety first—I recommend everyone develop this habit and avoid the scare I went through.
