I sense that this may be a loaded question because there are so many factors involved. What would the life span of a properly maintained coach be? I understand there are so many different manufa...
Fiberglas is the problem. It starts to delaminate after 25-30 years. In the boat industry you never buy a 20 year old boat without having a router and fiberglas layup experience. Mechanical wise, depends on how long CAT, Cummins and Detroit have parts. Other parts can be machined or adapted.