What is the normal tire pressure for an SUV?
2 Answers
SUV tire pressure is normal between 2.2 and 2.5 bar. The functions of tires are: 1. To serve as the medium for force transmission between the vehicle and the road surface, transmitting driving force, braking force, and steering force to achieve the vehicle's driving, braking, and steering operations; 2. To support the vehicle load, where the vehicle's load causes the tire to sink until the average pressure on the tire's contact area balances with the internal inflation pressure; 3. To reduce and absorb vibrations and impacts during driving, preventing early damage to vehicle components caused by severe vibrations; 4. To adapt to the vehicle's high-speed driving conditions, reduce driving noise, and ensure driving safety, comfort, handling stability, and fuel economy.
I've been driving SUVs for many years and found that the normal tire pressure is generally between 30 to 35 PSI, but the most crucial thing is to check the number specified in your car's manual or the label on the driver's side door. For example, my own SUV is set at 33 PSI. Last time when the pressure dropped to 28 PSI, I noticed the ride became a bit shaky, especially bumpy on rough roads, and the fuel consumption increased slightly. Different models vary; some off-road types might allow slightly lower pressure for better comfort, but it's best not to go below 30 PSI to prevent rapid tire wear. Improper pressure can also increase the risk of a blowout, especially on long trips. I recommend checking it at least once a month—gas stations often offer free air filling services, which is very convenient. Developing this habit can make your car run more smoothly, extend tire life, and save you a lot of hassle and money.
