I've got the Karrier Load Star tires from etrailer.com in the exact size as you in the D load range (65 max psi) and I've never had a failure with them in the last 5 years I had them.. One tire did start to show side cracking, but that was mostly my fault, since I never covered them....
I just bought 4 more of these tires (mounted on white steel wheels) for $109 each and FREE shipping..
Swapped out my old spare tire that was 14 years old (but never has touched the ground) with one of the better looking ones from 5 years ago and calling it good!
The OEM tires were only LR B tires (35 max PSI), so these D tires have much more capacity than the GVWR of the trailer and they are still 13" tires. I run them at 60 psi.
No, I don't have room for 14" tires.. :)
But, I see no need for them anyway.
Good luck!
Mitch