(I posted this on the NE regional forum also)
I've ridden the C&O once before and I realize very well that a road bike is sub-optimal for it. For those of you unfamilar with the C&O, it's a couple hundred miles of hard-packed dirt, crushed gravel, but bigger gravel chunks too sometimes, tree roots and mud, etc. It looks like my buds and I might be doing it again before long. So I need some technical expertise: are there things I could do to my roadie to make it C&O compatible? Can you put wider tires on a given wheel? The tires now are 25c 120 psi. I know I can get gnarlier tires, but I'm thinking they are still too narrow. Anything else I can do? Would I be crazy to try it? FYI, I live in Colorado so I can't just go there for a trial run.