TIRE VALVE

A tire valve is provided, wherein the tire valve includes: a tubular member including an inner surface, an internal channel and an enlarged section, the internal channel being defined by the inner surface and extending through the enlarged section; and a valve assembly including a sealing portion, movably inserted in the internal channel, and being operable to drive the sealing portion to engage with the inner surface to block the internal channel or disengage from the inner surface to unblock the internal channel; wherein when the tubular member is disposed through a rim, the enlarged section is inserted in an internal room of the rim, and a position where the sealing portion engages with the inner surface is located in the internal room of the rim.