I have been running the Coker radials in the 6.50 x 16 size and I am quite satisfied with them. They are designed to be run with tubes and I am using radial tubes. I gave a longer review of them in this post
https://www.stovebolt.com/ubbthreads/ubbthreads.php/topics/1087036/Tire_review.html#Post1087036When it comes time to replace them I will use the 6.00 x 16 size. I am running 3.55 rear gears and the truck is geared higher than I need or like.