They just got me. I just lost ALL 4 tires on a trip to Lake Placid and back ( 1,400 miles total). I thought I could at least make it 2 seasons....
I have 12,200 lbs on rear axles. Tires kept fully inflated and I drive 60-65 mph. They went with less than 7,000 miles.
Lost one on the way up. Luckily I noticed before blowing. Replaced at tire store along the way.
The other three went on the way home. One lost air, one with a bubble and the last one blew out and did minimal damage to my rig ( on fender ).
Since I had already borrowed my buddies spare, we were stranded for the night.
Replacing with Sailun S637s.
Note. The weights on these tires tell part of the story:
G614 58lbs (235/85/16)
S637 61lbs (235/85/16)
TowMax 32lbs (235/80/16)
GY Marathon 37lbs (235/80/16)
Don't wait like I did. It WILL happen to you.