What is the normal range of tire pressure in kPa?

[CalvinLynn]

The standard tire pressure is 240-250 kPa, and the reinforced tire pressure is 280-290 kPa, which is the normal tire pressure range. However, the specific normal tire pressure for a car should be based on the manufacturer's recommended value, which can generally be found in the vehicle's user manual, the label near the driver's door (B-pillar), the drawer next to the driver's seat, or the small door on the fuel tank cap. The manufacturer's recommended value will provide detailed information on the specific tire pressure for the tires. Tire pressure standards also depend on the type of tire and the vehicle model. Different vehicle models have varying weights, heights, and tire sizes, and thus require different tire pressures. Additionally, the tire pressure for cold tires and hot tires is different, with hot tires having a pressure about 20 kPa higher than cold tires. The manufacturer's recommended value refers to the cold tire pressure, which is typically around 230-250 kPa when the vehicle is cold, but the exact value should be based on the specific tire pressure indicated for each vehicle. Small cars: Normal tire pressure is 210-230 kPa, 220-240 kPa when the seats and trunk are fully loaded, and 220-230 kPa when the speed exceeds 140 km/h. Compact cars: Normal tire pressure is 220-240 kPa, 230-250 kPa when the seats and trunk are fully loaded, and 230-250 kPa when the speed exceeds 140 km/h. Mid-size cars: Normal tire pressure is 230-250 kPa, 240-260 kPa when the seats and trunk are fully loaded, and 240-260 kPa when the speed exceeds 140 km/h. Large mid-size cars: Normal tire pressure is 250-270 kPa, 270-290 kPa when the seats and trunk are fully loaded, and 270-290 kPa when the speed exceeds 140 km/h. Large cars: Normal tire pressure is 260-300 kPa, 280-310 kPa when the seats and trunk are fully loaded, and 280-310 kPa when the speed exceeds 140 km/h. Furthermore, tire pressure is significantly affected by seasonal factors. In summer, high temperatures can cause tires to heat up during driving, and high tire pressure can lead to blowouts, so the pressure should be slightly lower. In winter, tire pressure should be slightly higher than in summer due to thermal contraction and expansion, so a tire pressure of 250-280 kPa is generally more suitable for winter. Hazards of overinflated tires: Reduced friction and adhesion of the tires, affecting braking performance; causing steering wheel vibration and deviation, reducing driving comfort; accelerating wear on the central tread of the tire, shortening tire life; increasing vehicle vibration, indirectly affecting the lifespan of other components; overstretching the tire cords, reducing tire elasticity, and increasing the load on the vehicle during driving. Hazards of underinflated tires: Increased friction coefficient with the road surface, leading to higher fuel consumption; causing heavy steering and deviation, which are unsafe for driving; increasing movement in various parts of the tire, leading to excessive rolling and abnormal heating; reducing the functionality of the cords and rubber, causing delamination or cord breakage and excessive friction with the rim, damaging the tire bead and causing abnormal wear; significantly increasing friction between the tire and the ground, rapidly raising tire temperature, softening the tire, and drastically reducing its strength. High-speed driving may lead to a blowout.