I had Carlisle 205-75-14 ST biased ply tires on my dolly. They developed a strange wear pattern on the outside edges, requiring replacement. I searched for non-trailer replacement tires, but couldn't find anything with the same load rating. I don't believe you can get an LT tire that small. I ended up buying the radial version of the same tire. I've gone about 2000 miles on them, but so far so good.
Fran, Mary & Zoey (silver Cocker)
2006 Itasca Sunrise 35A, 2005 W-22, Allison 1000 5 speed
'13 Ford Focus ST or '10 Prius on Master Tow Dolly 80THD-SB or '00 Jeep Cherokee 4-down