Is it dangerous for cold tire pressure to increase from 2.5 to 2.9 on the highway?
1 Answers
It is normal for cold tire pressure to increase from 2.5 to 2.9 when driving on the highway, as the heat generated inside the tires during driving causes the tire pressure to rise. Typically, the pressure will be about 0.3 bar higher than the cold tire pressure. A tire pressure of 2.9 will not directly cause a blowout, as tires are not extremely fragile and can withstand a maximum pressure of 3.5-2.4 bar. Generally, for front-wheel-drive vehicles, it is recommended to have higher front tire pressure and lower rear tire pressure, meaning the front tire pressure should be 0.1~0.2 bar higher than the rear tire pressure. This is because the front-heavy design of the engine makes the vehicle heavier in the front. If the vehicle is fully loaded, the tire pressure can be appropriately increased, especially for the rear tires. The tire pressure label can usually be found on the edge of the driver's door frame, the fuel tank cap, or in the user manual. The manufacturer's recommended tire pressure values, unless otherwise specified, are suitable for both winter and summer and do not require special adjustments. Excessive tire pressure can cause the following issues: When driving on bumpy roads, high tire pressure will cause noticeable vibrations in the vehicle body. Excessive tire pressure concentrates the vehicle's weight on the center of the tire tread, leading to rapid wear in the central part of the tire and affecting its lifespan. Additionally, excessive tire pressure reduces the tire's contact area with the road, which can increase braking distance on low-traction surfaces during emergency braking, raising the risk of rear-end collisions.
