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Dueler A/T Ascent
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Specifications
| Size | 255/55R20 XL Dueler A/T Ascent |
|---|---|
| Width | 255 mm |
| Aspect ratio | 55 |
| Rim diameter | R20 |
| Load index | 110 |
| Speed rating | H |
| Load range | XL |
| UTQG | 640 A B |
|---|---|
| Treadwear warranty | 60,000 miles |
| Tread depth | 12/32" |
| Weight | 37 lbs |
| Max pressure | 50 psi |
| Severe snow (3PMSF) | Yes |
| Run-flat | No |
About the Bridgestone Dueler A/T Ascent
All-Weather All-Terrain Passenger Light Truck/SUV tire.
Features
* Precision sawtooth edges, staggered shoulder blocks and a traction focused center rib* Engineered with a special compound* Full depth 3D sipe technology* M+S Rated* Carries the Three-Peak Mountain Snowflake (3PMSF) symbol* 60,000 Mile Limited Treadwear Warranty* Platinum Pact Limited Warranty* 90 Day Buy & Try Guarantee
Benefits
* Designed to help provide rugged off-road power with elevated on-road comfort* Helps deliver traction and impressively long tread life* Designed to help deliver the biting edges and tread stability to navigate wet and wintry roads* Meets the required performance criteria for use in severe snow conditions
Understanding the 255/55R20 XL size
In the size code 255/55R20, 255 is the section width in millimetres (about 10"). 55 is the aspect ratio — the sidewall height is 55% of the width, or roughly 140.3 mm. R20 means radial construction on a 20-inch wheel, giving an approximate overall diameter of 31".
The load index 110 means each tire supports up to 2,337 lbs — about 9,348 lbs across a full set of four. The speed symbol H certifies the tire to 130 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 Bridgestone Dueler A/T Ascent is built for
It carries the three-peak mountain snowflake (3PMSF) symbol, meaning it passed a standardised severe-snow traction test. Fitment category: Undefined.
Tread life and grip ratings
This tire carries a UTQG rating of 640 A B. The treadwear grade of 640 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 $211.49 per tire, a full set of four costs $845.96. That sits close to the average for the 101 tires we stock in this size. Backed by a 60,000-mile treadwear warranty, that works out to roughly $14.10 per 1,000 miles across the set.
Frequently asked questions
What does the tire size 255/55R20 mean?
255 is the section width in millimetres, 55 is the aspect ratio (sidewall height as a percentage of width, about 140.3 mm), and R20 indicates radial construction for a 20-inch wheel. Overall diameter is approximately 31 inches.
What are the load and speed ratings of the Bridgestone Dueler A/T Ascent 255/55R20 XL?
Its load index of 110 allows up to 2,337 lbs per tire. Its speed rating of H is certified to 130 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 Bridgestone Dueler A/T Ascent 255/55R20 XL tires cost?
A single tire is $211.49 and a set of four is $845.96, covered by a 60,000-mile treadwear warranty.
Is the Bridgestone Dueler A/T Ascent rated for snow?
Yes. It carries the three-peak mountain snowflake (3PMSF) symbol, meaning it met a standardised severe snow traction test.
Does the Dueler A/T Ascent come in other sizes?
Yes — we stock 36 additional Dueler A/T Ascent sizes besides 255/55R20 XL. Fit only a size approved for your vehicle.