Trailer Tire?

Saturday I was on my way to the lake and had a blow out on my boat trailer. I have 13" radial tires and have only been able to get about 2 years max out of a set before having problems. I have had 2 sets of Carlisle radial trailer tires that got all out of shape (belts slipped) and the last set of radials I am not sure of the name blew the entire cap off of it. They haven't been run low on air pressure and they don't set out in the weather. I am not sure if I should continue with radial tires or buy bias tires. Any one had this kind of experience?

Thanks,

Michael

yes, i have trouble with inside tread wear on cheaper tires