Open Country A/T III
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Specifications
| Size | LT275/55R20 E Open Country A/T Iii |
|---|---|
| Width | 275 mm |
| Aspect ratio | 55 |
| Rim diameter | R20 |
| Load index | 120/117 |
| Speed rating | T |
| Ply rating | 10 |
| Season | All-Weather |
|---|---|
| Treadwear warranty | 50,000 miles |
| Tread depth | 16.4/32" |
| Weight | 50 lbs |
| Max pressure | 80 psi |
| Severe snow (3PMSF) | Yes |
| Run-flat | No |
About the Toyo Open Country A/T III
All-Weather All-Terrain Passenger Light Truck/SUV and CUV tire.
Features
* New tread compound and aggressive design* More evenly distributed void area* Staggered shoulder lugs* Increased lateral grooves* 3D multi-wave sipes* Stone-ejecting blocks* Carries the Three-Peak Mountain Snowflake (3PMSF) symbol* 65,000 Mile/105,000 km Treadwear Warranty (P-Metric/Euro-Metric Sizes)* 50,000 Mile/80,000 km Treadwear Warranty (LT and Flotation Sizes)* For staggered fitments, rear tires are eligible for 50% of the stated mileage warranty* 500 Miles/45 Days Trial Offer
Benefits
* Provides confident wet braking and handling* Provides cut-and-chip resistance* Provides excellent off-road grip* Delivers a quiet and comfortable ride* Enhances on and off-road traction* Increases tread block rigidity for excellent handling stability* Provides better worn appearance* Enhance off-road traction with biting edges* Enhance traction on all surfaces, including snow* Reduce irregular wear* Eject stones from grooves* Meets the required performance criteria for Use in Severe Snow Conditions
Understanding the LT275/55R20 E size
In the size code 275/55R20, 275 is the section width in millimetres (about 10.8"). 55 is the aspect ratio — the sidewall height is 55% of the width, or roughly 151.3 mm. R20 means radial construction on a 20-inch wheel, giving an approximate overall diameter of 31.9".
The load index 120 means each tire supports up to 3,086 lbs — about 12,344 lbs across a full set of four. The speed symbol T certifies the tire to 118 mph under its rated load. Always match or exceed the load index and speed rating listed on your vehicle's door-jamb placard.
What the Toyo Open Country A/T III is built for
The Toyo Open Country A/T III is an all-weather tire — a year-round option certified for severe snow service, so it can stay on the vehicle through winter. It carries the three-peak mountain snowflake (3PMSF) symbol, meaning it passed a standardised severe-snow traction test. It is classified for all-terrain (a/t) use.
Price and value
At $251.65 per tire, a full set of four costs $1006.60. That is about 24% above the average of the 156 tires we stock in this size, reflecting its position in the range. Backed by a 50,000-mile treadwear warranty, that works out to roughly $20.13 per 1,000 miles across the set.
Frequently asked questions
What does the tire size 275/55R20 mean?
275 is the section width in millimetres, 55 is the aspect ratio (sidewall height as a percentage of width, about 151.3 mm), and R20 indicates radial construction for a 20-inch wheel. Overall diameter is approximately 31.9 inches.
What are the load and speed ratings of the Toyo Open Country A/T III LT275/55R20 E?
Its load index of 120 allows up to 3,086 lbs per tire. Its speed rating of T is certified to 118 mph. Check your door-jamb placard and do not fit a tire rated below the vehicle's requirement.
How much does a set of 4 Toyo Open Country A/T III LT275/55R20 E tires cost?
A single tire is $251.65 and a set of four is $1006.60, covered by a 50,000-mile treadwear warranty.
Is the Toyo Open Country A/T III rated for snow?
Yes. It carries the three-peak mountain snowflake (3PMSF) symbol, meaning it met a standardised severe snow traction test.
Does the Open Country A/T III come in other sizes?
Yes — we stock 163 additional Open Country A/T III sizes besides LT275/55R20 E. Fit only a size approved for your vehicle.