Glenn,
Based on all the discussions I have seen, Goodyear is the ONLY company that stands behind both the tires AND the damage caused by tire. BUT, the G614 seems to have more failures than others. I had 16" 614s on my trailer and it was really overloaded from the factory. I upgraded to 17.5" wheels/tires---check out
www.trailertiresandwheels.com for this. I now have Michelin XTA LR J (4805lbs) tires and 17.5" wheels and my tire troubles seem to be over. Confidence in tires/wheels is a BIG deal when running one of these big trailers
Joe