An automobile wheel cover able to display tire pressure includes an air pressure meter and a safety and leakproof T-connector (referred to as T-connector), wherein the air pressure meter is installed in a position nearby the center of wheel cover, the T-connector being fixed on a holder on the perimeter of the wheel cover and able to act together with the wheel cover to engage with or desengage from the tire and composed of a tire connector, an air pressure meter connector and an air valve connector to communicate with each other. The tire connector is provided with a plunger therein and able to engage with the air valve of tube to admit the air in the tire into the T-connector, the air pressure meter connector being engaged with the air conduit of the air pressure meter. The structure of the air valve connector is the same as that of the air valve of the tire, a new air valve being formed when the tire connector is engaged with the air valve of the tire. Through the foregoing structure, the wheel cover can display the tire pressure at all times on under all-weather conditions and can also display the tire pressure when inflating or deflating the tire.
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