What Causes High Tire Pressure Display?
3 Answers
Tire pressure monitoring shows high readings due to over-inflation or prolonged high-speed driving causing tire temperature to rise. Below are specific guidelines for adjusting car tire pressure: 1. On roads with significant bumps, appropriately reduce tire pressure by 0.1-0.2bar from the standard tire pressure. For long-distance high-speed driving, tire pressure should not be too low; it's advisable to increase pressure by about 0.2bar from the standard lower limit. 2. For new tires, pressure can be increased by about 0.2bar from the standard. For old tires, appropriately decrease pressure according to the standard, and if severely worn, use the lower limit of the standard tire pressure. 3. In winter, it's advisable to increase tire pressure by about 0.2bar from the standard. In summer, use the lower limit of the standard tire pressure. For cars parked outdoors in summer, pressure can generally be 0.1bar lower than the standard to prevent high-temperature blowouts.
I've been driving for over 20 years, and high tire pressure warnings are quite common. The main reasons are either over-inflation, especially with roadside air pumps that aren't precisely controlled—I sometimes accidentally add too much; or high temperatures, where tire pressure naturally rises when driving in summer heat, triggering the alarm. For example, once during a long trip under scorching sun, my tire pressure soared to the warning level, but after stopping to cool down, it returned to normal. This also happens when temperatures suddenly warm up in winter. Remember, tire pressure should be checked when the car is cold, ideally first thing in the morning before driving. I recommend keeping a manual tire pressure gauge for regular checks, as excessive pressure increases the risk of blowouts and worsens handling. Developing this habit is both convenient and safe—I now check mine monthly.
I'm quite passionate about automotive technology, and high tire pressure issues are often minor system glitches. The sensors in the tire pressure monitoring system (TPMS) might give false readings if their batteries are dead or if they're dirty—for example, after driving through mud, the sensors could get covered and show high pressure. Additionally, the system might trigger false alarms if it doesn't update data promptly after inflation. From my experience, sudden temperature changes can cause the system to issue misleading alerts without proper adaptation, or problems may arise if the system isn't recalibrated after tire modifications. I recommend using a diagnostic tool to check for error codes, and if that doesn't work, try resetting the system. Keeping the sensors clean and replacing their batteries regularly can prevent false alarms, saving money and hassle while improving driving safety.
