Abstract: A tire monitoring system is disclosed for a single or dual wheel tire assembly having a pair of analog/digital readout pressure gauges and associated valve stems for individually monitoring and pressurizing the tire or tires of the wheel assembly. The monitoring assembly may be located on a full wheel streamlined hub cap which can be mounted to the outside wheel of the dual wheel assembly by a U-shaped bracket connected to the wheel through the wheel bolts with the hub cap connected thereto by quarter turn fastener assemblies to insure a strong mounting to the wheel.