blofgren wrote:
 Saying that, I have noticed most that have posted here that have run very old tires or Chinese tires without issue all have relatively light trailers.  I can assure everyone that it is a completely different ball game with a larger, heavier trailer and the China bomb issue is very real.  I had a Carlisle tire fail on me last year while bringing our new to us fifth wheel home last year.  I was lucky that I felt a vibration and managed to get stopped before any damage occurred.  The tire had a HUGE separation on the edge of the tread.  I now run Sailun S637 Load Range G tires which are the only Chinese tire that I would recommend at this point in time because they are constructed to a higher standard than the standard Chinese ST tire.
The OP has a 28' trailer, so that theory isn't supported in this case.