How much air pressure should be in a 650 tire?
2 Answers
For an empty vehicle, the recommended air pressure is between 4 and 5.5. Under the premise of not exceeding the load capacity, for bias-ply tires: the front tires should be at 6.5, and the rear tires at 7. For radial tires: the front tires should be between 6.5 and 7, and the rear tires between 7 and 7.5. Below is relevant information: Tire: A tire is a circular elastic rubber product mounted on various vehicles or machinery to roll on the ground. Typically installed on metal rims, it supports the vehicle body, cushions external impacts, ensures contact with the road surface, and maintains the vehicle's driving performance. Development: In 1839, Charles Goodyear developed "rubber vulcanization technology," successfully creating rubber that would not decompose at any temperature below its boiling point. Thirty-eight years after Goodyear's death, in honor of his significant contributions to the American rubber industry, Frank Seiberling named the tire company he founded "Goodyear."
I've been driving for decades, and tire pressure is particularly important—you can't just fill it randomly. For regular family car tires, like those 65-series low-profile tires, the manufacturer's recommendation is usually between 30 to 35 PSI. If the pressure is too low, the tires wear out much faster and increase fuel consumption; if it's too high, they're prone to skidding or blowouts, especially in summer when tire temperatures rise and cause expansion. I check mine once a month in the morning when the car is cold—just buy a tire pressure gauge, it's easy and cheap. Each car model might be different, so check the recommended value on the door frame or in the manual—for example, my car specifies 32 PSI. Always check before a long trip—safety first, don't wait until something happens to regret it.
