What causes the car tire warning light to come on?

[LukeFitz]

This situation is usually caused by very slow air leakage. At this time, you can use a tire pressure gauge to measure the pressure. The front tires should be 2.3 bar, and the rear tires should be 2.5 bar. If there is insufficient air, you should replenish it. According to the international GBT2978-2008 standard, the required inflation pressure for standard car tires is 2.4-2.5 bar. If the tire pressure of a certain tire is too low, high-speed operation will cause the tire temperature to rise, which in turn will cause the tire pressure to increase. In this case, you should stop and rest in time or replace the spare tire.