Will the High Tire Pressure Warning Light Illuminate?

[Melissa]

The high tire pressure warning light will illuminate, at which point tire inspection and pressure adjustment are required. According to the stipulations and requirements of the international GBT2978-2008 standard, the tire pressures for different types of tires are as follows: Standard tires: 2.4-2.5bar; Reinforced tires: 2.8-2.9bar; Maximum pressure: should not exceed 3.5bar. Hazards of excessive tire pressure: The friction and adhesion of the tire will decrease, affecting braking performance; It can cause steering wheel vibration and deviation, reducing driving comfort; Accelerates localized wear of the tread pattern in the center of the tire, shortening the tire's lifespan; Increases vehicle body vibration, indirectly affecting the lifespan of other components; Excessive tension on the tire cords can lead to reduced elasticity of the tire body, increasing the load on the vehicle during driving; Decreases puncture resistance. When encountering sharp objects like nails or glass on the road, they can easily penetrate the tire, causing internal cracks or blowouts due to impact, leading to tire bursts.

[EdwardRose]

Last time my car also had the tire pressure warning light on, so I researched this issue specifically. The tire pressure monitoring system is like a meticulous butler—whenever the tire pressure deviates from the manufacturer's set standard, whether too high or too low, it will light up to alert you. When the tire pressure is too high, the contact area between the tire and the ground decreases, reducing traction. Special attention is needed on hot days when the tires get scorching hot, as the expanding air inside further increases the pressure, making it more likely to trigger the alarm. I recommend using a tire pressure gauge to check the actual value immediately after parking. The standard tire pressure is usually listed on a sticker on the door frame or fuel cap—just compare it to know the correct reading.

[LeAmelia]

Excessive tire pressure can indeed trigger the tire pressure warning light. Modern vehicles are generally equipped with direct tire pressure monitoring systems, which have built-in sensors inside the tires. Once the pressure exceeds the limit, a yellow exclamation mark symbol will appear on the dashboard. My neighbor experienced this last month—his warning light suddenly came on after a highway drive, and the measured tire pressure was 0.5 bar higher than normal. Long-term overinflation is particularly harmful to tires, not only causing excessive wear in the center but also increasing the risk of blowouts on bumpy roads. Moreover, excessively high tire pressure makes the suspension system overly stiff, resulting in a noticeably harsh ride over speed bumps.

[DiHaven]

The tire pressure warning light doesn't necessarily indicate a leak, as excessive pressure can also trigger the alarm. Many car owners tend to overlook the impact of tire temperature changes. For instance, after a vehicle is exposed to direct sunlight for several hours in summer, tire temperature can soar above 60°C, causing tire pressure to rise by approximately 0.3-0.5 bar. I always keep a compact tire pressure gauge in my car and measure immediately when the warning appears. If confirmed overinflated, you can press and hold the tire pressure reset button on the center console for 3 seconds to reset the system, then drive slowly for a few minutes to allow recalibration. However, it's best to adjust to the standard pressure value before driving.