Dirt roads rough roads ClassA/Class C

I drove a 26 foot class c up the haul road to prudhoe bay and across many dirt roads in the west. Dang near got stuck on a gps directed logging road on Vancouver Island.. Issues were gravel dings to the windsheild, cabin wiring that vibrated across metal edges causing grounds and at one high desert managed to vaporize the crankcase oil.
My new class A will not go on extensive gravel/dirt roads. I have a 2012 canyon 4x4 for exploring

pops