Turning radius reduced.

Marcohotrod said
I am saying driving on the street with a spool is no big deal, doing it since 1985. I have 1969 10" front drums and 1968 11" rear drums. no grinding

It's not from a spool. It's from the fact that the lower ball joint has a nub on it that limits how far the ball joint can travel. Grinding it down fixes the problem.

10" front drum brake cars don't have this issue.