What is the appropriate tire pressure for 175/70r14 tires?
2 Answers
For common passenger cars, the original manufacturer's standard tire pressure is 2.3-2.5 bar, with a maximum not exceeding 3.0 bar and a minimum not below 2.1 bar. 1. Different models of domestic cars, private vehicles, and minivans may have varying factory-standard tire pressures due to factors such as vehicle weight and chassis height. 2. Excessive tire pressure reduces the contact area between the tire and the ground, which can lower fuel consumption but may also affect braking performance. 3. Insufficient tire pressure can cause the tire sidewall to directly contact the ground, leading to wear, sidewall rupture, or even a blowout. 4. The standard tire pressure (referred to as the standard tire pressure) can usually be found in the vehicle's user manual, on the label near the driver's door (B-pillar), in the drawer next to the driver's seat, on the fuel tank cap, or on the side of the passenger door for sedans.
The tires on my car are 175/70R14, and the ideal tire pressure is generally between 30-32 PSI, but I always refer to the sticker on my door or the manual for the exact recommendation. The label on my small car's door pillar states 31 PSI, so I follow that. If the pressure is too high, the ride becomes uncomfortably bumpy, reduces comfort, and increases wear on the center of the tire. If it's too low, fuel consumption can rise by more than 5%, and there's a higher risk of a blowout due to overheating at high speeds. I've made it a habit to check every two weeks using a simple pressure gauge when the tires are cold—never measure when they're hot, as the pressure will read falsely high. All four tires should have the same pressure; otherwise, the car may feel unstable when turning. By the way, don’t forget the spare tire—keeping it at the same pressure ensures it's ready for emergencies.
