What does tire pressure psi mean?

1 Answers
LaBrooke
07/29/25 11:43pm
Tire pressure psi means the unit of tire pressure is pounds per square inch, and the full English name of psi is Pounds-per-square-inch. p stands for pound, s stands for square, and i stands for inch. Generally, the tire pressure gauge commonly seen uses bar as the unit of pressure, while another unit is psi. The tire pressure values like 2.4 and 2.5 usually refer to bar, but bar and psi can be converted between each other, with 1 bar equal to 14.5 psi. According to the provisions and requirements of the international GBT2978-2008 standard, the tire pressure for different tires is as follows: standard tires are 2.4-2.5 bar; reinforced tires are 2.8-2.9 bar; and the maximum pressure should not exceed 3.5 bar.
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