Must the tire pressure of all four car tires be the same?

[DeBethany]

Car tire pressure does not have to be the same for all four tires. The normal tire pressure range is 2.2 to 2.8 bar. It is sufficient to maintain the front tire pressure at 2.4 bar and the rear tire pressure at 2.3 bar. In winter, you can appropriately increase the pressure by 0.1 bar, and in summer, decrease it by 0.2 bar to prevent tire blowouts. Functions of tires: 1. Generate driving force, braking force, and lateral force through interaction with the road surface; 2. Bear the weight of the car; 3. Provide cushioning and shock absorption. Steps for replacing a new tire: 1. Use a jack to lift the car to a certain height; 2. Remove the screws and take off the old tire; 3. Install the new tire and release the jack.

[Verona]

I've been driving for over ten years, and I believe that the air pressure in all four tires should be kept as consistent as possible. This is extremely important for safety—uneven tire pressure can cause the car to skid or lose control during high-speed turns, and it also leads to much faster wear. Having one tire higher or lower than the others is like walking with a limp; it increases the risk of a blowout or damage to other components. I recommend checking the tire pressure yourself with a gauge once a month or topping up at the free air stations at gas stations. The owner's manual will specify the recommended value, usually around 2.5 bar, but weather changes can affect it—pressure tends to drop slightly in cold weather. In short, making it a habit to maintain your tires regularly can save you a lot of money on replacements.

[Gwendolyn]

I personally believe it's best to keep the tire pressure the same, but minor differences are normal, such as within ±0.1 bar. The issue arises with temperature fluctuations—tire pressure rises in summer under strong sunlight and drops when it's cold in winter, so frequent attention is necessary. Every time I wash my car, I use a tire pressure gauge to check just in case. Uneven tire pressure can cause uneven tire wear, leading to premature replacement and unnecessary expenses. Nowadays, most new cars come with a tire pressure monitoring system, which is quite convenient. If an alert appears, address it promptly. Don't overlook this small detail, as it affects handling stability and fuel consumption.

[SkylarLee]

I believe tire pressure should be basically the same, otherwise the car won't drive comfortably. When the difference is significant, the tires wear unevenly due to uneven force distribution, especially during long-distance driving which consumes more fuel and makes handling sluggish. I've personally suffered the consequences—neglecting it led to extended braking distances and nearly caused an accident. Now I check regularly to ensure the pressure is within the manual's recommended range, driving smoothly and with peace of mind.