Open Country M/T

Toyo's Open Country M/T has anchored the heavy-duty mud-terrain category for the Jeep and Toyota platforms for over a decade. The tread runs deep, hook-shaped blocks that self-clean in mud and scalloped shoulder lugs that bite into rock; an over-the-shoulder tread design extends usable contact patch in low-pressure aired-down running. Toyo publishes a 600 UTQG treadwear rating in the sizes that carry one — high for a mud-terrain — though highway noise is the trade-off most reviewers flag. The M/T carries no severe-snow certification and no mileage treadwear warranty. Production is sourced from multiple Toyo plants (Japan, Indonesia, the US, and historically China) depending on size and production date.