What is the general tire pressure?
2 Answers
Tire pressure is generally inflated to 2.4 to 2.5 bar, while reinforced tires should be inflated to 2.8 to 2.9 bar, with the maximum pressure not exceeding 3.5 bar. Tire pressure is an indicator of a vehicle's load capacity, as the load capacity depends on the level of tire pressure. When a car is driving at a constant speed on a level road, it must overcome rolling resistance from the ground and air resistance, and tire pressure significantly affects the rolling resistance coefficient. Appropriately reducing tire pressure can improve ride comfort, but if the tire pressure is too low, it may affect other vehicle performance. Tire pressure is a crucial factor influencing tire lifespan and fuel economy, so it is essential to choose the appropriate tire pressure to extend tire life and enhance economic efficiency.
As an experienced driver with many years behind the wheel, I usually inflate my tires to between 32 and 35 PSI, but the exact pressure depends on your vehicle model. I recommend checking your owner's manual or the sticker on the driver's door pillar first, as it lists the recommended values. Overinflation causes faster wear in the center of the tire and affects handling; underinflation increases fuel consumption and may even lead to blowouts. The most accurate readings are taken when the tires are cold, and I make it a habit to check them monthly with a portable pressure gauge. Gas stations often have free air pumps, but make sure their pressure gauges are reliable before using them. Seasonal changes also matter—in winter, you can go 1-2 PSI higher, while in summer, leave some room for expansion. Neglecting tire pressure during daily driving shortens tire life and significantly increases safety risks, so regular maintenance is key.
