Is it normal for cold tire pressure to be 250 and rise to 280 while driving?
2 Answers
It is normal for cold tire pressure to be 250 and rise to 280 while driving. Generally, the tire pressure for family cars is considered normal between 2.2 bar and 2.5 bar. It's important to understand that tire pressure is a range, not a fixed number. This is because tire pressure can be influenced by various objective factors, such as temperature and altitude. Therefore, slight fluctuations in tire pressure are normal in practice. The functions of tires are: 1. Transmitting driving force, braking force, and steering force to enable vehicle operation; 2. Supporting vehicle load; 3. Reducing and absorbing vibrations and impacts during driving to prevent severe vibrations from damaging vehicle components. Methods for tire maintenance include: 1. Regularly checking tire pressure; 2. Periodically inspecting tires for bulges, cracks, cuts, punctures, or abnormal wear; 3. Removing foreign objects like stones, metal pieces, or nails from tire treads; 4. Performing wheel alignment or tire balancing.
After driving for so many years, I think it's quite normal for the cold tire pressure to rise from 250 to 280 when running. Tires heat up while driving, and the air inside expands naturally, increasing the pressure—usually a rise of 20 to 30 kPa is fine. But pay attention to your speed: if you drive at high speeds more often, the pressure rises even more sharply. For example, since I frequently drive on highways, I've seen pressure increases of up to 40 kPa. I suggest you check the recommended value on the door frame to ensure your cold tire pressure is set correctly. If it consistently exceeds 280 or even higher, the tire pressure might be a bit too high, which can lead to excessive wear on the central part of the tire and reduced grip. I make it a habit to check my cold tire pressure once a month—too high increases the risk of a blowout, while too low spikes fuel consumption. Safe driving isn't something to take lightly, so it's good to check your tire condition regularly.
