And.......there is no special alignment for radial tires vs bias....if you have manual steering adding additional positive caster is beneficial for ease of steering.
Dead wrong! Adding more positive caster will actually increase the steering effort when turning & will produce faster steering return to straight after the turn(maybe too fast with manual steering). Adding more positive caster provides more straight ahead stability, but works against you in turning. Radial tires have a different design that allows for more negative camber setting than bias tires can.
