Is 224 kPa Tire Pressure Normal?
2 Answers
The displayed tire pressure of 224 kPa for a car's tires is not within the normal range. According to the international GBT2978-2008 standard, the standard tire pressure should be between 2.4-2.5 bar. A pressure of 2.0 bar is below the minimum standard value, so it is not normal. Hazards of low tire pressure: Increased friction coefficient with the road surface, leading to higher fuel consumption; causes the steering wheel to feel heavy and prone to deviation, which are factors detrimental to driving safety; increases the movement of various parts of the tire, leading to abnormal heating due to excessive rolling; reduces the functionality of the cords and rubber, causing delamination or cord breakage, and excessive friction with the rim, resulting in damage to the bead area and abnormal wear. Hazards of high tire pressure: Reduced tire friction and adhesion, affecting braking performance; causes steering wheel vibration and deviation, reducing driving comfort; accelerates localized wear of the tread center pattern, shortening tire lifespan; increases body vibration, indirectly affecting the lifespan of other components.
A tire pressure of 224 kPa is within the normal range, as the standard tire pressure for most family cars typically falls between 220-250 kPa. However, I've noticed that tire pressure can fluctuate with temperature changes—it tends to increase in summer and decrease in winter, so that's something to keep in mind. Tire pressure is also closely related to vehicle load. For just me driving alone, this pressure is perfectly fine, but if the whole family goes on a trip with a full load of luggage, it's best to increase it to around 240 kPa. Last week, I just checked it with the tire pressure gauge my cousin gave me—it's important to keep the pressure consistent across all four tires, as significant differences can cause the car to pull to one side. For the most reliable reference, I'd recommend checking the manufacturer's suggested values posted on the door frame.
