Flatbed Trailer Spread Axle Tire Wear

Flatbed spread axle trailer tire problem. Spread axles should have a tire designed for spread axles. They're better off being high scuff and have a shoulder for this application. It's also been said that the foot print is to wide on these tires. The drive tires I had on this trailer didn't wear like these hove, and they had 27K miles on them while on the trailer. I had a blow out on the drivers side back axle, inside with the drive tires on the trailer. It destroyed my mud flap, mud flap weights, and damaged my tail lights. I then had to pay $400.00 for a retreaded tire & installed. After this incident I went to a commercial truck tire shop to buy trailer tires for a spread axle. They didn't have the spread axle tires I wanted. They said these are high scuff. Since there a new model I didn't know anything about them. I asked them numerous times, 'are sure these are spread axle tires'. They said over and over they were. These are nice tires. They have very low rolling resistance said to be 77, and they have a go feel to them going down the road. They just don't work seem to work well with a spread axle. No one seems to know why the tires have a number of flat spots on them.