What to look for in a Class C?

Be weary of any rig showing signs of exterior delamination, almost always due to some form of water intrusion. Delamination can only get worse once it begins. Tires over 4 years old showing any signs of cracking or pitting must be replaced. Well maintained tires (covered when in storage ) may be fine over 4yrs old IMHO, but anything over 8yrs should be replaced. Anything over 35k or 5 years old must have a complete tranny fluid and torque converter fluid flush. Older RV's with low miles being bad is largely a myth IMHO if properly maintained, meaning fluids changed, oil. antifreeze, break fluid, tranny fluid and well lubed chassis. Only caveat here is with older Ford break caliper pins; they tend to rust internally if not used regularly resulting in calipers seizing and wearing out the pads let alone toasting the wheel hubs with excessive heat. Other niceties: self leveling jacks, ten gal hot water heater with gas and electric. Plenty of rear end clearance as older C's tend to bottom out a lot if not modified. Good luck