>Actually, I have had good luck with the Hankook D load range tires.
>   www.busdepot.com

Well, Coyote . . . I mean, Ron  : )  I guess mine were a bad
batch.  Perhaps "early" dry rotting (is there such a thing?) is accelerated
by tires sitting more often they are used; i.e., rolling around on tarmac
and concrete.
But really, I wasn't kidding about the tires, and I am not against Hankook,
and really don't have any opinions about them except to report my one and
only experience.  I was surprised and disappointed with what I perceived as
a ridiculously short life expectancy of the bias-ply trailer tires.  They
were also *extremely* difficult to mount.  They wouldn't hold air at the
bead of the rim.  My installer was throwing fits!  They kept bubbling out,
more or less, and he had to tie a rope very tightly around the whole tread
of the tire to mash it inwards toward to the center of the wheel.  Every
single one.  Took him over an hour while I stood there and fussed on why he
was taking so dern long.  What was he doing to me, charging by the
hour????  Oy!  Anyway, he got through it.  I paid him $1 per tire because
it inconvenienced me so much.

Come to think of it, maybe he sprayed some SuperFast DryRot stuff on them
when I went to the bathroom . . .

hk