A wireless tire pressure alarming system includes a tire pressure sensor &
transmitter attached to each car wheel for sensing the tire pressure in
each car wheel and for remotely sending the tire pressure signal from each
car wheel; and a receiver having a plug plugged in a car cigarette-lighter
receptacle to be powered by the car battery through such a
cigarette-lighter receptacle and for receiving the tire pressure signal
from the car wheel; whereby upon detection of a tire pressure reduced
below the pre-determined safety pressure value of each car wheel, an alarm
will be actuated either by an optical alarm signal or a sound alarm signal
for warning the car driver for inflating his or her car wheel for
enhancing driving safety.