[77newell]

I believe that as one marches up the motorhome scale one will find that the chassis become more rigid and thus there is less movement for the interior components to deal with. Combining that with structurally better interior construction and higher end coaches will last much longer than lower end coaches.

Of course, water intrusion can pretty quickly ruin any interior and this is something that we should check for thoroughly before buying. Any time water gets in places where isn't not supposed to be bad things will happen.