What Causes the Tire Pressure Warning on Bumpy Roads?
3 Answers
The reason for the tire pressure warning on bumpy roads is that the current tire pressure of the four tires is not within the normal range, indicating a tire pressure issue. According to the international GBT2978-2008 standard, the recommended tire pressures for different types of tires are as follows: Standard tires: 2.4-2.5 bar; Reinforced tires: 2.8-2.9 bar; Maximum pressure: should not exceed 3.5 bar. Hazards of overinflated tires: Reduced friction and adhesion of the tires, affecting braking performance; Causes steering wheel vibration and misalignment, reducing driving comfort; Accelerates wear on the central tread pattern, shortening tire lifespan; Increases vehicle vibration, indirectly affecting the lifespan of other components. Hazards of underinflated tires: Increases friction coefficient with the road surface, leading to higher fuel consumption; Makes the steering wheel heavy and prone to misalignment, compromising driving safety; Increases movement in various parts of the tire, causing abnormal heat due to excessive rolling; Weakens the function of cords and rubber, leading to delamination or cord breakage, and excessive friction with the rim, causing damage to the tire bead area and abnormal wear.
Last time I drove to the mountains for a trip, the road was full of bumps and potholes, and the tire pressure warning light came on midway, which made me a bit nervous. Later, when chatting with friends, I learned that bumpy roads can increase tire pressure fluctuations, causing the tire pressure monitoring system to mistakenly interpret it as a leak. Reasons include sensors being displaced by vibrations, slow leaks from loose wheel hubs, or tire edge damage accelerating air loss. Bumpy roads also make it easier for foreign objects like small stones to get lodged in the tires, leading to actual pressure drops and triggering alarms. Now I've developed a habit: every time I drive on rough roads, I stop to check the tire condition and pressure, ensuring there are no small damages, and recalibrate the monitoring system. Regular tire maintenance can also prevent similar situations, such as maintaining the correct tire pressure range to reduce vibration impacts on driving safety.
From my understanding, there are three main causes for tire pressure warnings on bumpy roads: First, severe vibrations cause significant fluctuations in internal tire pressure, leading to sensitive system false alarms. Second, loose wheel hub or sensor fixtures may shift or short-circuit after jolts, sending incorrect signals. Third, the tire might already have a minor air leak that's usually unnoticeable, but bumps accelerate pressure loss triggering the alert. The solution is to check each tire's actual pressure and appearance after stopping, looking for cuts or embedded debris. Regular system maintenance and sensor functionality tests are recommended to reduce false alarms. Driving slowly on rough terrain can lessen tire stress and prevent warning triggers.
