Discoverer Road + Trail AT
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Specifications
| Size | 245/50R20 Discoverer Road + Trail AT |
|---|---|
| Width | 245 mm |
| Aspect ratio | 50 |
| Rim diameter | R20 |
| Load index | 102 |
| Speed rating | V |
| Load range | SL |
| Season | All-Weather |
|---|---|
| UTQG | 620 A B |
| Treadwear warranty | 65,000 miles |
| Tread depth | 11/32" |
| Weight | 32.07 lbs |
| Max pressure | 44 psi |
| Severe snow (3PMSF) | Yes |
| Run-flat | No |
About the Cooper Discoverer Road + Trail AT
All-Weather All-Terrain Passenger SUV Tire.
Features
* Durable tread* Improved interlocking tread lugs* Continuous tread pattern extends over 50% further down the sidewall than the predecessor and angled design is twice as thick* Durable internal construction* Interlocking tread blocks* Road Glide technology* Connected center tread lugs* Carries the Three-Peak Mountain Snowflake (3PMSF) symbol* 65,000 Mile/105,000 Kilometer Limited Treadwear Warranty* 45-Day Test Drive* UTQG 620 A B
Benefits
* Helps resist cutting, cracking and tearing that occurs on tough trails* Increase all-season performance to help you feel confident in wet and dry conditions* Will help you experience a smoother, quieter ride* Provides more area to grip soft or uneven surfaces* Helps the tire keep its shape when driving over rough surfaces, for more even wear across the tread* Help provide the grip and consistent control you need on uneven terrain* Improves the fit between the tire and wheel to encourage a smoother, more comfortable ride* Help provide stability and traction on snowy surfaces* Meets the required performance criteria for Use in Severe Snow Conditions
Understanding the 245/50R20 size
In the size code 245/50R20, 245 is the section width in millimetres (about 9.6"). 50 is the aspect ratio — the sidewall height is 50% of the width, or roughly 122.5 mm. R20 means radial construction on a 20-inch wheel, giving an approximate overall diameter of 29.6".
The load index 102 means each tire supports up to 1,874 lbs — about 7,496 lbs across a full set of four. The speed symbol V certifies the tire to 149 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 Cooper Discoverer Road + Trail AT is built for
The Cooper Discoverer Road + Trail AT 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.
Tread life and grip ratings
This tire carries a UTQG rating of 620 A B. The treadwear grade of 620 is a relative durability score — a grade of 200 is expected to last roughly twice as long as a grade of 100 under the same controlled test. Traction grade A measures straight-line wet stopping grip (AA is highest, then A, B and C). Temperature grade B reflects heat resistance at sustained speed (A is highest).
Price and value
At $186.74 per tire, a full set of four costs $746.96. That sits close to the average for the 101 tires we stock in this size. Backed by a 65,000-mile treadwear warranty, that works out to roughly $11.49 per 1,000 miles across the set.
Frequently asked questions
What does the tire size 245/50R20 mean?
245 is the section width in millimetres, 50 is the aspect ratio (sidewall height as a percentage of width, about 122.5 mm), and R20 indicates radial construction for a 20-inch wheel. Overall diameter is approximately 29.6 inches.
What are the load and speed ratings of the Cooper Discoverer Road + Trail AT 245/50R20?
Its load index of 102 allows up to 1,874 lbs per tire. Its speed rating of V is certified to 149 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 Cooper Discoverer Road + Trail AT 245/50R20 tires cost?
A single tire is $186.74 and a set of four is $746.96, covered by a 65,000-mile treadwear warranty.
Is the Cooper Discoverer Road + Trail AT rated for snow?
Yes. It carries the three-peak mountain snowflake (3PMSF) symbol, meaning it met a standardised severe snow traction test.
Does the Discoverer Road + Trail AT come in other sizes?
Yes — we stock 35 additional Discoverer Road + Trail AT sizes besides 245/50R20. Fit only a size approved for your vehicle.