- Pan America is an off-road application. The subtext is that in that environment, Foreign Object Damage (FOD) to a belt is always a possibility. A pebble getting between belt and sprocket can break belt fibers.
- A steel chain affords more durability in the worst conditions—think mud, sand, fording streams, etc.
- Repairing or replacing a chain is comparatively easy anywhere in the world. Chain is “made by the mile and sold by the foot” while a belt can’t be repaired and a replacement must be exact.