Me too, best and most consistent way I have found over the years.
Patrick
Like those above, I paint the hubs first. Next I'll dilute the paint for the tires to the point where it will run around the rim by capillary action and apply this with a small brush, staying away from the wheel rim itself. Depending on the size of the wheel and how distinct the hub is, I'll either continue to paint the tire or let the thin coat dry before finishing it.
Hope this will help you; I learned it here on the Forums.
Mike