Toyo Open Country M/T Mud‑Terrain Tires
Built for harsh terrain, the Toyo Open Country M/T delivers confident traction, dependable durability, and a bold look that fits work and weekend use. Deep, open tread blocks bite into mud and loose surfaces, and wide voids clear debris to keep the contact patch engaged. A reinforced casing and strong sidewalls add stability under load and help guard against punctures on rocks and ruts. On pavement, it tracks predictably when properly inflated and rotated. If your build needs a tire that handles jobsite demands and heads straight to the trail, the Open Country M/T is a proven performer.
Key Features and Specifications
The Open Country M/T uses an aggressive, directional-inspired tread with large, scalloped shoulder lugs for lateral bite and extra traction when aired down. Wide, self-cleaning channels shed mud and stones to maintain grip, and staggered blocks help on uneven terrain. A cut and chip resistant compound supports long service in abrasive conditions. Reinforced sidewalls and robust beads improve stability with heavy loads and add impact protection off-road. Select sizes carry higher load ratings for towing or gear-heavy builds. Tread depth and weight vary by size, so review the specs for your exact fitment. The focus is traction, protection, and consistent wear when maintained correctly.
Off‑Road Traction and Durability
In deep mud, the widely spaced lugs bite and clear quickly, helping you keep momentum in ruts and clay. On rocky trails, the sturdy sidewall and blocky shoulders add grip at lower pressures and help shield against sharp edges. The durable compound resists cuts and chipping in gravel and lava rock, and stone ejectors help reduce drilling. In sand, its broad footprint at lower psi improves flotation and forward bite. Whether you are crawling, hauling, or exploring, the M/T is built to deliver reliable traction and casing strength so you can focus on your line.
On‑Road Manners and Noise
Mud-terrain tires trade some on-road refinement for off-road grip. The Open Country M/T tracks well for its class, but expect more tread hum than an all-terrain, especially as it wears. Set pressures to your vehicle's door jamb label, rotate every 5,000 to 6,000 miles, and keep alignment in spec to even out wear and slow noise growth. In the wet, drive conservatively, allow extra braking distance, and avoid abrupt inputs. If you split time between highway and trail, this tire strikes a workable balance, with the understanding that quietness and fuel economy will not match less aggressive patterns.
Sizes and Fitment Guide
Choose your Open Country M/T size based on the door jamb placard and your build goals. Stock-fit sizes suit daily duty and towing, while upsized options add ground clearance and traction for trails. Popular picks include 35x12.50R20, 285/75R16, 285/70R17, and 315/75R16. Lift height, wheel width and offset, and potential trimming determine if an upsized tire will clear at full lock and compression. Match load rating to your vehicle's requirements, verify speed and load indices, and confirm wheel specs. If unsure, our fitment team can cross-check your setup to deliver the stance and performance you want without rubbing.
Popular Open Country M/T Sizes
- 35x12.50R20: A go-to for lifted half-ton and three-quarter-ton trucks seeking added clearance and a bold stance. Check wheel offset and crash bar clearance.
- 285/75R16: A classic tall-and-narrow choice for older trucks and overland builds, good ground clearance with moderate width.
- 285/70R17: A popular upsized fit on many modern trucks, often works with mild lifts or level kits.
- 315/75R16: A substantial jump in diameter and width, typically needs a lift, gearing considerations, and careful wheel selection.
Price and Buying Options
Open Country M/T pricing varies by size, load rating, and availability. Larger diameters and higher load indices cost more due to added materials and capacity. Save time with wheel and tire packages that arrive mount-ready, or ship to a trusted installer for quick service. Watch for seasonal promotions and rebates to stretch your budget. Beyond the sticker price, plan for installation, TPMS service, an alignment check, and regular rotations. Proper setup helps the tire wear evenly and can extend usable life, lowering your cost per mile.
Open Country M/T vs Alternatives
If you spend real time in mud, ruts, or rocky trails, the Open Country M/T's large voids and strong sidewalls outshine hybrid and all-terrain patterns. For daily driving with occasional dirt, a rugged-terrain or all-terrain option will ride quieter and stop shorter in the wet, trading some deep-mud bite. Within Toyo's lineup, the Open Country R/T blends off-road traction with better road manners for highway-heavy use. Across brands, the trade-offs are similar, more aggressive tread improves loose-surface grip but adds noise and rolling resistance. Choose based on where you drive most.
Ownership Tips and Maintenance
Start with proper fitment and OE-recommended pressures for daily driving. Rotate every 5,000 to 6,000 miles, and use a 5-tire pattern if you carry a matching spare. Realign after suspension work or hard impacts. Off-road days call for careful air-down and reinflation before highway speeds. Inspect sidewalls and tread for cuts or embedded stones, and rebalance as needed, large lugs can magnify imbalances as they wear. For winter, remember that mud-terrain designs have limited siping, drive conservatively on packed snow and ice or run a dedicated winter set in severe climates.
