Our Newmar coach as well as several friends have the paint checking. As a result Newmar replaced all the siding matrial complete with all new paint on ours and our traveling friends at a reduced cost. So yes another confitmation that all including Newmar coaches have the problem up to and including 2008. I had a winnebago, white in color, that had no paint and with the exact same problem. Manufacturers of painted products seem to call the condition "side wall checking" and unpainted were called "sidewall etching". The condition is the same and affects appearance, not function.