Wrong size, have cooper at3 on my blown engined C2500. Found them to be overall good tires. Son had some that went 60-70k miles, those were a 265-70-17 iirc. Just out 305-70 or 75 18 after putting a 3.5" superlift kit on it.
Would like them for my 1500, but only come in LRE 285-75-18. Would prefer an XL, a bit lighter, don't need some 15-16k lbs of tired under a rig that will never be over 8000 lbs.
I haven't found a brand yet with XL versions in that size. Next smaller 275-65-18 or 285-60-18 does. As is stock 265-65-18.
Marty