What are the reasons for low tire pressure in cars?
1 Answers
During summer and winter, thermal expansion and contraction cause variations in tire pressure; different loads, whether empty, half-loaded, or fully loaded, result in different tire pressures; severely worn tires and unworn tires also have different pressures. Precautions for tire inflation: Always use a pressure gauge to check the pressure to avoid overinflation, which can cause tire blowouts; after stopping, wait for the tires to cool down before inflating, as driving increases tire temperature, affecting pressure; inspect the valve stem. If the valve stem and core are not properly aligned, with protrusions, indentations, or other defects, inflation and pressure measurement will be difficult. Ensure cleanliness during inflation; the air pumped in must not contain moisture or oil, as these can deteriorate and damage the inner tube rubber. Do not exceed the standard pressure excessively and then release air, nor overinflate due to prolonged inability to inflate while traveling. Excessive pressure can overstretch the cords, reducing their strength and shortening tire lifespan. Before inflating, clean the valve stem of dust and ensure the valve core is not loose. After inflation, apply soapy water (or saliva) to the valve stem to check for leaks (small bubbles indicate leaks), and securely fasten the valve cap to prevent dirt from entering. For radial tires, due to their structure, their sinking amount and contact area are larger, often leading to misjudgment of underinflation and overinflation. Conversely, their naturally larger sinking amount and contact area might make low pressure seem adequate. Use a standard pressure gauge for accurate measurement. The operating pressure for radial tires should be 0.5-1.5 kg/cm² higher than for conventional tires. Both onboard pressure gauges and those used in tire shops should be regularly calibrated to ensure accurate pressure checks.
