Is semi-trailer pressure 12 high?
Generally, the tire pressure of freight cars is around 12 to 13.
1. The standard air pressure of the tire is marked on the driver's side of the door or the edge of the door (in addition, this standard value can also be found in the fuel tank cover and instructions).
2. It is worth noting that there are different standard units of air pressure, generally there are 34 kinds.
Just as barometer has kilograms and kilograms, barometer also has 34 kinds of marking units, such as kilogram square centimeter, bar, pound square inch and kilopascal. The conversion relationship between them is: 1bar equals 1.02kg\/ cm2 equals 102kP equals14.5psi.
The maximum atmospheric pressure shall not exceed 14 atmospheric pressure. The higher the tire, the greater the damage.