Why is the tire pressure light on but the tires are fine?
1 Answers
The reason the tire pressure light is on but the tires appear fine could be due to either overinflated tires or prolonged driving with low tire pressure. Here are the details: 1. Overinflated tires: The tire pressure monitoring light may illuminate if a tire is punctured, causing a very slow leak, which can be checked with a tire pressure gauge. Sometimes, the light comes on because the tire pressure is too high. According to the international standard GBT2978-2008, the recommended tire inflation pressures are: Standard tires: 2.4-2.5 bar; Reinforced tires: 2.8-2.9 bar; Maximum pressure: should not exceed 3.5 bar. Therefore, if any tire exceeds 3.0 bar, it may trigger the tire pressure monitoring light. 2. Prolonged driving with low tire pressure: The tire pressure monitoring light may also come on if you drive for an extended period with low tire pressure. This usually happens when one tire has significantly lower pressure, causing it to heat up during high-speed driving, which in turn increases the tire pressure. In such cases, you should stop and rest or replace the tire with a spare immediately.