What is the normal value for tire pressure?
2 Answers
Tire pressure is considered normal when it is between 230 to 250 kPa. Tire pressure refers to the air pressure inside the tire. Both overinflation and underinflation can shorten the tire's lifespan. Low pressure increases the deformation of the tire body, making it prone to cracks on the sidewalls, and also increases the tire's contact area with the ground, accelerating wear on the tire shoulders. High pressure, on the other hand, causes excessive stretching of the tire cords, reducing the elasticity of the tire body and increasing the load on the vehicle during driving. Tires are usually mounted on metal rims, supporting the vehicle body, cushioning external impacts, ensuring contact with the road surface, and maintaining the vehicle's driving performance.
When it comes to normal tire pressure, I've been driving for over a decade and often remind friends not to overlook this issue. Generally speaking, a tire pressure between 32 to 35 PSI is considered standard, but this isn't a one-size-fits-all rule—your car's specific value should be checked on the door frame label or owner's manual, as some vehicles may require 28 or 38 PSI to be optimal. Why is it important? Underinflation causes tires to deform and overheat, increasing fuel consumption by over 10% and raising the risk of blowouts at high speeds. Overinflation, on the other hand, makes handling stiff and accelerates wear on the tire center. Temperature fluctuations have significant impact: tire pressure rises slightly in hot summers and may drop in cold winters, so it's best measured when the tires are cold (most accurate after overnight parking). I recommend investing in a digital tire pressure gauge and checking monthly—maintaining proper pressure ensures safety and extends tire lifespan. Don't wait until problems arise to address it.
