Hmmm... Link wouldnt work for me. Tho I have been having issues with CK5 forum recentlly. Havent had any experience with the Iroks but my cousin had Swamper SL's that lasted about 8 months on his extended cab Z71 DD. Also while cruising the freeway you could see the tires kinda wobbling. I dunno about the bias ply's on DD truck. Maybe if you didnt drive much, worked close to home. He was a painter and was driving em all over the place; in town, on the freeway. Those things looked like racing slicks when he finally replaced them. Tho he was kickin azz on the trails.
