Question: how much air do i put in my 20 inch tires?
Answer: The specialist said the 20 inch tires should easily be inflated to within 10% of their max rating. He recommended 46 to 48. I went with 46 but he said if I wanted a quieter ride I could go as low as 42 but that would affect gas mileage and the 46 to 48 was optimal.