20. HIGH-SPEED TIRE In order to ensure that the tire and the rim are well combined, raise the wheel and rotate it. Press around the tire by hand for several times to see if the tire is perfectly combined with the rim. Pump the tire up to the specified tire pressure. If there is air leak between tire bead and rim after pumping, turn the valve down and press the upper side of the tire with hand to rotate the tire and pump the air in. After pumping with specified air pressure, make sure if the tire bead is well installed into the rim. 20-15