I don't know if it's the one I received or if it is a general experience with this pump, but it is not clear whether or not the pump is securely attached to the nozzle for pumping up the tyre or not. This leads me to think that either it is not sitting flush or the pump is very very slow in inflating the tyre.The gauge is nice, it gives one feedback of what the pressure is and whether or not it is changing.