These tires use low air pressure in the five to six psi range and riders should only use them at the low speeds typically encountered during trials events. Motocross bikes and dirt bikes in general ...

The device is claimed to be +- 0.7% accurate from 0 to 39 psi, and +- 1.4% accurate from 40 to 85 psi, with 0.1 psi precision. It isn't rated for tire pressures greater than 85 psi (5.9 bar).