I got these tires for my 18" Monsters because I didn't want the Load E BFG AT's. I knew these tires were more at risk for off-road punctures but this takes the cake.
I was going down a gravel road, probably 1-2kms long and doing 20-40kph. I got back to pavement, and 5min later stopped at a store to hear a hissing. I found a rock punctured a tire, right in between the threads. It was sticking out perhaps 1/4". It looked like the rock had cracked off. Three months with these tires with little off-roading and already punctured one. I had BFG AT's on my old 03, 2 sets, and never punctured them and I went over large sharp rocks, glass, brushed rocks on the sidewalls, etc. No issues.
I attached a pic of the rock....the pen is a Bic pen. The bottom half of that rock (left to right in pic = top to bottom) was in rubber. So there isn't much rubber there at all. I had a local garage put a plug in it for me.
Oh well, live and learn.