I have a Diamond City Trailer that is only 15 moths old and the two tires are "cupping" so bad that I am going to have to replace them. I bet the trailer has less than 1500 miles on it as I live within 5 miles of the boat ramp where I fish most of the time. Cupping means the outside edge of the tread on both tires looks like someone took a chunk of rubber out about every 2 or 3 inch around the entire diameter of the tire. I had the trailer tires balanced the day I bought the trailer with less than 100 miles on them.

I would like to get USA made tires in 215/ 75 r 14 ST. Any suggestions? Anyone used Goodyear Endurance?

Thanks