Abstract: A portable trailer wheel rinsing system comprises at least one liquid storage tank configured to be attached to a trailer, a plurality of spray nozzles configured to be attached to the trailer and direct a liquid spray onto a wheel assembly of the trailer. The plurality of spray nozzles are in fluid communication with the at least one liquid storage tank and a pump is in fluid communication with the at least one liquid storage tank and the plurality of spray nozzles. A timer may be included and be in electrical communication with the pump. The timer is configured to activate the pump for a predetermined amount of time and the pump is configured to pump a liquid from the at least one liquid storage tank through the plurality of spray nozzles such that a liquid spray is applied to the wheel assembly for the predetermined amount of time.