We bought our 2010 Sandpiper 345RET back in July and drug it home from Tampa Fla to Raleigh NC. Just prior to me buying it, the owner replaced one of the Duros because it got a "knot" on it where the tread met the sidewall. We made it home with no issues. Then our on first trip to the Outer Banks, an hour out headed home we stopped for lunch and I found a "knot" on the new tire in the same place. We got it home and it has set in the shed since. I'll be buying a new set of GY, Maxxis or Power King tow masters in the next few weeks before the season starts.
HOWEVER, I have to be fair to Duro, the original owner and I both pulled the FW with 2011 2500HD duramaxes and had too much weight on the rear axle and the failed tires were on the back axle. I have since lowered my hitch to level the FW out. So the issue may have well been too much weight on the rear tires. But I promise you, no matter what, I'll have a new set of tires before warm weather gets here in NC.
North Carolina born and bred
2010 Sandpiper 345RET
2011 2500 Duramax Silverado
2001 Centurion Elite Bowrider direct drive
"Old water skier"
Jesus Christ my Saviour