Is a cold tire pressure of 2.5 and running pressure of 2.7 considered high?
2 Answers
A cold tire pressure of 2.5 and running pressure of 2.7 is considered high. The recommended tire pressure is between 2.2 and 2.5 bar. If the tire pressure is too high, it will reduce the contact area between the tire and the ground and accelerate the wear of the central tread pattern. If the tire pressure is too low, it will increase the friction coefficient of the road surface and worsen the vehicle's handling. Recommended cold tire pressure for 1.6L displacement: The recommended cold tire pressure for a 1.6L displacement is 2.3, while the recommended cold tire pressure for 1.2T and 1.8L displacements is 2.4. The cold tire pressure applies to both summer and winter tires. It is normal for the tire pressure to increase after driving due to heat generation. Do not reduce the tire pressure after driving. Check cold tire pressure regularly: Check the cold tire pressure at least once a month and before any long-distance trips. Do not forget the spare tire, and ensure it is inflated to the full-load specified pressure. Incorrect tire pressure will compromise safety, vehicle handling, comfort, and fuel economy, and will accelerate tire wear. If the tire pressure is too low, it may cause significant tire temperature rise and internal damage, leading to tread separation and even tire blowouts at high speeds.
I think this is a good question, just like my usual driving situation. It's completely normal for the tire pressure to be 2.5 when cold and rise to 2.7 after running on the highway. I've been driving for seven or eight years and have encountered similar situations—thermal expansion and contraction. The air expands a bit when heated, and an increase of about 0.2 bar is standard. However, be careful not to exceed the manufacturer's recommended upper limit. For example, some cars recommend a cold pressure of 2.2 to 2.5, and it's fine if it rises a bit when hot. But if it's too high, like above 3.0, it may increase wear on the center of the tire and reduce grip during handling. I recommend checking the recommended values on the door frame label. I usually check the cold pressure with a portable pump when refueling to ensure safety and peace of mind. Developing good habits can help avoid unexpected issues.
