Must the tire pressure be the same for all four tires?
2 Answers
It is not necessary for the tire pressure to be exactly the same for all four tires. Having slight differences in tire pressure between the car tires is perfectly normal. Even if all four wheels are inflated to the same pressure initially, the tire pressure values may vary slightly after some driving. As long as the tire pressure values remain within a reasonable range, it won't have a significant impact on the vehicle. Generally, a tire pressure difference of up to 0.1bar will not cause any issues. For household cars, the recommended tire pressure is typically between 2.3 and 2.5bar. However, if the tire pressure difference is too large, some car models may experience pulling to one side, especially if the front wheels have a significant pressure difference—the car may pull towards the side with lower tire pressure. If you notice your car pulling to one side while driving, it is advisable to first check the tire pressure.
I've accumulated some experience in car maintenance. Generally, the tire pressure of all four tires should be consistent to ensure smooth driving and reduce the risk of uneven tire wear or blowouts. I remember last winter when I was on a business trip, I noticed the front left tire was losing air unusually fast. Upon checking, I found its pressure was significantly lower than the others, causing severe vibration on the highway that nearly led to an accident. Since then, I've developed the habit of checking tire pressure monthly. Actually, there might be slight variations between different car brands and models. For example, SUVs with heavier rear loads often have manufacturer recommendations for 5-10 kPa higher pressure in rear tires, but left and right sides should ideally be identical. The key is to refer to the label on the door frame or the manual for precise recommended values. While tire pressure doesn't need to be perfectly identical, excessive deviation can cause numerous problems - compromising safety and shortening tire lifespan. I always use a digital tire gauge during inflation - it takes just minutes and provides convenience and peace of mind. Developing good habits makes driving more worry-free and effortless.
