It is recommended to push the head of the chuck onto the tire valve with the thumb of your right hand, whilst holding the body of the gauge with your left hand if possible, as this leaves your left thumb free to operate the bleed button whilst maintaining a good seal on the valve. Deflating your tires to the exact pressure required on your vehicle or motorcycle is made easy with the Flexi-Pro Tire Pressure Gauge by TireTek.įirst rotate the 45 º chuck head on your Flex-Pro Tire Pressure Gauge to match the angle of the tire valve, then push and hold the tire gauge onto the tire valve to view the current tire pressure.