not sure discs make a difference in the stud position, but the 62" measure is where you want the inner face of the wheel centers to keep the tires at the right track width
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics
