Why does tire pressure become abnormal when driving on highways?
3 Answers
Tire pressure stability during highway driving is a normal phenomenon and does not require excessive concern. Overinflated tires: This reduces the friction and adhesion of the tires, leading to steering wheel vibration and deviation, which decreases driving comfort. It also accelerates localized wear on the central tread pattern, shortening tire lifespan. Increased vehicle vibration causes excessive stretching deformation of the tire cords, reducing the elasticity of the tire body. Underinflated tires: This increases the friction coefficient with the road surface, raising fuel consumption and making the steering wheel heavy and prone to deviation, compromising safety. It also increases the movement of various parts of the tire, causing abnormal heating due to excessive rolling.
I often encounter unstable tire pressure issues when driving on highways, mainly due to tire heat expansion. The friction between tires and the road at high speeds generates significant heat, causing the air inside to expand and pressure to rise. This is especially noticeable in summer when higher ambient temperatures make tire pressure more prone to surge. Another factor is initially low tire pressure, often overlooked during routine checks. At first, I thought the tires were damaged, but later realized that simply inflating them to the proper level when cold solved the problem. The strong vibrations on highways can also exacerbate issues if the rims are slightly deformed or the valve stems leak. Regularly checking tire pressure with a gauge and maintaining the standard value is crucial. Never ignore the tire pressure monitoring system (TPMS) alerts in your car—safe driving is paramount. Remember, checking tire pressure when the car is cool before long trips can significantly reduce risks.
When I first started driving, I didn't understand why tire pressure increased on highways, which scared me into thinking something serious was wrong with the car. Actually, it's quite simple: tire friction generates heat, causing the air inside to expand. On long trips, tire temperature rises quickly, increasing the pressure. In winter, the temperature difference on highways is smaller, so it's less noticeable, while in summer, the heat builds up more slowly. I've developed the habit of checking the pressure when the tires are cold in the garage before long trips and adjusting it to the recommended value. High-speed driving involves more vibrations, and fluctuating tire pressure can accelerate tire wear or even increase the risk of punctures. For convenience, installing a tire pressure monitor allows real-time data tracking. Safety comes first—proper tire pressure also saves fuel and provides a steadier ride. Regular tire maintenance helps prevent unexpected issues.
