Determining tire pressure involves the following specific steps: 1. Generally, the front and rear tire pressures of a car are different, and for different vehicle models, the tire pressure varies between full load and empty load conditions. If the vehicle is empty, the front tire pressure is around 2.5 bar, and the rear tire pressure is around 2.4 bar, which falls within the normal range. For specific tire pressure standards, refer to the tire pressure values indicated on the vehicle's label sticker. 2. Tire pressure is affected by seasons. In summer, when temperatures are high, tires tend to heat up during driving. If the tire pressure is too high, it can easily lead to a blowout, so the pressure should be slightly lower. In winter, the tire pressure should be a bit higher than in summer due to thermal contraction and expansion. Generally, the tire pressure of a car in winter should be appropriately increased by about 0.2 bar, with a range of 2.5 bar to 2.8 bar being more suitable. 3. If the tire pressure is in a normal state, the outer side will have 4-5 tread blocks in contact with the ground, which corresponds to a normal range of 2.2-2.5 atmospheres. If more than 6 tread blocks are in contact with the ground, it indicates that the tire pressure is too low and needs to be replenished promptly. If fewer than 4 tread blocks are in contact, it means the tire pressure is too high, and some air should be released appropriately. 4. If the tire pressure is insufficient, the contact area between the tire and the ground increases, leading to greater friction resistance. The steering will feel heavier, fuel consumption will increase, and there will be a sense of insufficient power. Due to low tire pressure, the sidewall of the tire will deform, accelerating the aging of internal steel wires and fabric layers, thereby shortening the tire's lifespan. Driving for extended periods with insufficient tire pressure is very dangerous and requires timely replenishment.
