Hi wallon (and others) is this due to stone strike/gravel damage or for some other reason?
That would be some of it mate, however it has to do with preparation before painting. They are made in China nowdays however I don't believe it has anything to with the quality of the steel.
On mine the surface rust started to appear everywhere also. Any little chip would rust but also under the lids in the tool boxes etc. From what I experienced on mine it was very poor paint work with little or no undercoat or primers, the paint was actually flaking off in areas around the hinges etc, which looked to me to be from poor prep (not removing the grease properly etc).
The other issue with this company was that the "show unit" they use is a 2007 model and is imaculate (I had it on loan for a few months because they couldn't supply mine on time) all the stainless steel was first rate etc.
When mine was delivered all of the stainless hinges had been replace with mild steel painted with silver paint, not even gal! When I questioned this they claimed they could change the spec if they wanted but denied that they had. Lucky for me I had lots of pictures and had done screen dumps off their web site.
When I fronted them with the evidence they couldnt give me my money back fast enough for me to go away. Even though i wanted one of their campers they couldnt supply it to me in the same quality or specification as the unit they take to shows, this is the unit they use to get you to sign on the dotted line, then they supply a very different product. They are counting on the fact that you only see the show unit for 20 minutes, so they try and get away with it. The owner was a prize goose.
Regards
Jas