This is a very nice trailer. I think it has the Adjust-a-Ryde suspension, like my '87, which is comprised of Dexter axles cut in half, made into a swing arm, and uses individual spring packs and shock absorbers. It will not wear out like the rubber axles used on the "other" brand
It is excellent. But, it might have Moyr-Ryde suspension, which is even better.
They changed in the mid 70's sometime....
Damage does look like a tire blowout.
I'd buy it in a minute!
Best of luck,