The optimal tread design features large, staggered tread blocks, wide grooves, open shoulders and special groove ribs that increase the tire's grip on soft and loose terrain surfaces. The tread area is also pinned for studs, which significantly increases the tire's mud terrain traction. The large tread elements and upper sidewall pattern ensure side traction in deep mud and loose dirt, which enables the tire's forward motion at all times. This tread design also increases the self-cleaning capability. The tread elements disperse mud, while the stone ejecting groove ribs eliminate rocks stuck in the footprint. This prevents stone retention from harming the casing and guarantees the tire's constant terrain surface contact.