Originally Posted by hugemoth
Best tires I ever used on a HF trailer were 155-80R12 steel belted radial car tires. Lasted forever, soaked up the bumps, but just about impossible to find nowadays.
Good used car tires have given me the best service on all my trailers (six). Only if you are pushing the load capacity would I pay the money for trailer specific tires. Starting with a set of half worn Michelins I put over 50k on my 12 foot utility trailer without a problem. Paid $25 each mounted, never even balanced them. Most of the five lug use the old Ford bolt pattern, and a taller and wider tire is a plus if they will fit.
Most of the powder coated trailer wheels are junk also. Rust quickly and don't run true.
Other contributing factors are poorly aligned trailer axles and a built in crown in straight axles to increase the load capacity. The camber changes with load, wearing out your tires inside or outside depending on how much load you typically carry.