4 Suretrac Wide Climber A/T II, 35X12.50R20, 121S, E (10 Ply). The DI-2025 Power Grip promotes great durability. 4 Goodyear Wrangler TrailRunner AT, 275/60R20, 115S, SL. The tread's high void ratio maintains a clean footprint by cleaning out snow and mud and ejecting rocks stuck between the tread elements.