First remove the tire, when we press the tire, we generally find the outside two points and the inside two points, the purpose is to separate the tire mouth from the steel rim. When looking for a point, we must pay attention to avoid the tire pressure sensor, generally find two points that are 90 degrees from the valve nozzle. After pressing, secure the tire to the turntable and prepare to remove the tire. First remove the outer tread of the tire from the steel rim, and make sure that the tire pressure sensor (valve nozzle) is located about 20 cm in front of the pry bar (turn clockwise). Pry up the position at 12 o 'clock, and the valve nozzle should be in the direction of about 2 o 'clock. After the outside of the tire is removed, we lift the tire up without moving the rim. Use a wrench to remove the tire pressure sensor and put it next to us, so we can boldly pick the outside tread of the tire.
To install the tire, evenly apply soapy water or other lubricant to the mouth of the new tire, first install the inner tire gauge, then install the tire pressure sensor, and then install the outer tire mouth. Note that the tire pressure sensor (valve nozzle) must be located about 20 cm in front of the tire mounting entrance (2 o 'clock position), so as to ensure that the tire does not touch the sensor.