Back on the farm, we would scrub the tires with well water and lye soap, using a horse hair brush.
Let dry under a maple tree while having a glass of iced tea.
Then get some rubbing alcohol from your grandfather's medicine cabinet. Wipe tires with it and let dry.
Then get some castor oil from your mothers medicine cabinet, apply to the tires, be sure to use it all and put the empty bottle back. Why put the empty bottle back?, so that the next time she decides to dose you with castor oil, it will be all gone ......
humfrz