it cannot be used on vehicle tires at all. Why this device will not work: Pressure Limitation: Vehicle tires require high compression pressure (PSI). The device is an electric air pump designed strictly for high-volume, low-pressure items like air mattresses and pool floats; it completely lacks the mechanical power to push air into a stiff tire and will burn out or overheat. Incompatible Valves: The connected plastic nozzles are molded for standard plastic inflation valves, which do not fit the specialized metal Schrader or Presta valves found on vehicle tires.