Back in the day, when stud-pilot (or “Budd”) wheels ruled the disc wheel world, maintenance professionals dreamed of a system without the inherent limitations of ball seats and inner/outer cap nuts.

With safety and maintenance issues of primary concern to fleets, it's not surprising that use of hub-piloted mounts continues to grow steadily. Accuride is seeing growth of about 5-10% a year.

A new section was added to the guide that deals with conditions that, though not out-of-service situations, will eventually cause wheel, hub, drum or stud failures. All of these conditions are found ...