What is 30 psi in tire pressure?
2 Answers
30 psi is approximately 2.1 bar in tire pressure. According to the international GBT2978-2008 standard, the recommended tire pressures for different types of tires are as follows: Standard tires: 2.4-2.5 bar; Reinforced tires: 2.8-2.9 bar; Maximum pressure: should not exceed 3.5 bar. Tire pressure, strictly speaking, refers to the air pressure inside the tire. Normal tire pressure in winter: In winter, the tire pressure should be based on the standard tire pressure of the vehicle, with an appropriate increase of about 0.2 bar. Normal tire pressure in summer: Generally, the lower limit of the standard tire pressure for the vehicle's tires is sufficient. For example, the lower limit for standard tires is 2.4 bar. If the car is often parked outdoors, the tire pressure can generally be about 0.1 bar lower than the standard to avoid tire blowouts due to high temperatures.
After driving for so many years, I can tell you that 30 PSI converts to 207 kilopascals or 2.07 bar in our commonly used units. This is at the upper limit of the normal tire pressure range, with most sedans recommending around 30-35 PSI. Overinflated tires wear out faster in the center, make the ride uncomfortably stiff, and reduce shock absorption. Underinflated tires increase fuel consumption and raise the risk of blowouts, especially at high speeds. I recommend checking your tire pressure regularly, ideally when the tires are cold, using a simple tire pressure gauge—at least once a month. Also, different car models may have different tire pressure requirements, so check the sticker on the door frame or the manual to be safe. Pay extra attention to tire pressure if you’ve just changed tires or are planning a long trip. Safety always comes first—don’t overlook these small details.
