Center tread blocks and shoulder treads create unique four-lug design.Shoulder tread features both horizontal and V-shaped sipes for excellent wet-surface traction, especially on turns.Tread block modeled after QTR-5 knife covers over half the sidewall!Sidewall tread integrates with shoulder blocks for serrated edge, greatly improving traction in loose surfacesQuad-center treads create additional edges for traction.Built-in stone ejectors enhance self-cleaning.Pattern-embossed shoulder blocks distort sound waves created by the large and deep tread.Heavy-duty, 12-ply rated construction across many sizes, with increased load capacity making the tire suitable for ¾ and 1-ton trucks.