What is car tire pressure, how much is enough?
Tires are the most important component on any vehicle and one of the most important parameters of a tire is tire pressure.
What is tire pressure?
Tire pressure is simply understood as the pressure of compressed air inside the tire. This pressure greatly affects the operating characteristics of the tire. More specifically, properly inflated tires help the vehicle roll on the road with the entire tire surface. The contact surface is evenly spread, thereby helping to wear the tire surface evenly. In addition, a set of tires inflated to the correct pressure also brings direct benefits to the user such as optimal smoothness, stable cornering ability, shortest braking distance and fuel economy.
What is the standard tire pressure?
Checking tire pressure regularly is one of the simple but very important things. Technical experts recommend that car users must perform periodic checks at least once a month and before long trips. Because the pressure is not up to the standard specified by the manufacturer can cause many harmful effects, up to 90% of tire failures come from the reason of tire pressure not up to the standard specified.
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1. Tire pressure recommended by the manufacturer
Typically, information about the pressure (recommended by the manufacturer) of your tires can be found in your vehicle's owner's manual or on a placard on the door of your vehicle. This number is usually expressed in PSI, KPa or Bar and is usually the maximum pressure. These are common units of measurement for tire pressure on owner's manuals or pressure gauges.
1 Kg/cm2 = 14.2 PSI (Pound per square inch)
1 PSI = 6.895 KPa
1 KPa = 0.01 Bar
Each vehicle has different recommended pressure levels, you just need to follow those instructions to adjust tire pressure accurately, safely and effectively.
2. Pressure printed on the tire sidewall
As you can see from the image above, you can see the pressure level on the tire sidewall. This is the maximum pressure level that the tire you are using can withstand. Please note that this is not the optimal pressure level for operation.
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3. Ideal pressure
The pressure indicated on the vehicle door sill is the pressure recommended by the manufacturer. Therefore, the actual pressure of the tire needs to be compensated for the pressure caused by the weight of the cargo/occupants in the vehicle. Usually, reducing the recommended pressure by 10-15% will be a reasonable pressure level.
It should also be noted that the recommended tire pressure is the pressure when the tire is cold – when the vehicle has been stopped for a long time and the tire surface is not hot.
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