Product info:
Cooper Discoverer AT3 XLT, LT275 /65 R20 126S E1 RWL
The Cooper Discoverer AT3 XLT: the dark horse on a hot streak. The off-road dynamo with on-road manners. This Discoverer AT3 is Cooper's long-wearing, hard-charging flagship all-terrain tire built for those looking to get more from their truck, SUV or CUV when it matters most.
Cooper Discoverer AT3 XLT Features
The Cooper Discoverer AT3 XLT lays down all-season traction, aggressive off-road performance and durability for towing and hauling alongside its aggressive design and tread pattern.
But what makes the Cooper AT3 so good when the going gets tough?
It's all in the proprietary technology Cooper has packed in to the AT3 XLT, which includes:
- Cooper's Durable Tread Technology, which helps you haul heavy loads over longer distances and brutal terrain—from a job-site payload to your weekend camping gear.
- Its Secure-Grip tread pattern promotes all-terrain traction and protection from sharp rocks.
- Even Wear Arc Technology, which maximizes treadwear and handling on paved roadways.
- Cooper's Whisper Grooves create a sound buffer that minimizes road noise, vibration and harshness.
The Discoverer AT3 XLT also features other 4x4-based additions, such as stone ejecting ledges and rugged shoulders for enhanced grip when you might have to put your rig in 4-low over soft surfaces such as mud and sand as well as when you need to air down or lock your differential for bouldering.
Cooper Discoverer AT3 XLT Treadwear and Warranty
On top of its performance features, Cooper isn't selling the AT3 short on its manufacturer warranty.
At 60,000 miles of coverage for all LT-metric sizes of the AT3 XLT, Cooper is confident this Discoverer won't let you down no matter where your work or adventures take you.
But if you want the best protection for your new set of Cooper Discoverer AT3 XLT's available, our exclusive Certificates will cover them down to 3/32" of wear.
And in the extremely unlikely event you have a Cooper AT3 fail, you'll get a brand new one if it can't be repaired.
(You can add our Certificate coverage in the cart of your order.)
If performance and reliability combined with one of the more competitive price points in the all-terrain tire segment are what you're after, the Cooper Discoverer AT3 XLT might be the perfect fit.
UNIFORM TIRE QUALITY GRADE (UTQG)Uniform Tire Quality Grade
| SECTION WIDTH Measures the width of the tire from sidewall to sidewall, which is mounted on a wheel and inflated. | 275 |
| ASPECT RATIO Determines the sidewall height of the tire, based on the width. | 65 |
| RIM DIAMETER Measures the rim size from top to bottom (in inches). | 20" |
| OVERALL DIAMETER Measures the tire height from top to bottom when mounted on a wheel and inflated. | 34.21" |
| RIM WIDTH RANGE The approved range of rim widths this tire can be safely mounted on. | 7.5" - 9.5" |
| WEIGHT The weight of the tire measured in pounds (weight of tire only). | 57 LBS |
| TREAD DEPTH Measured in /32 of an inch to determine the height of the tread block from top to bottom. | 16/32" |
| LOAD INDEX Determines the weight a tire can carry at maximum air pressure. See load Index chart. | 126 |
| LOAD RANGE Determines the ply rating of the tire. Should be replaced with the same or higher rating. | E1 |
| MAX PSI The max psi is the highest pressure the tire can hold, but should be inflated to your vehicle specifications not exceeding this amount. | 80 PSI |
| SPEED RATING Designation from laboratory testing to determine the maximum speed the tire can travel. Maintain the same speed rating or higher for replacement. | Up to 112 mph |
| SIDEWALL DESC. The sidewall designation to describe the lettering on the sidewall. | Raised White Lettering |
| WARRANTY Estimates the life expectancy of the tire, set by the tire manufacturer. | 60000 |
| VPN Vendor Product Number | 170204027 |
| GTIN Global Trade Item Number | 029142908043 |
Customer Reviews
This is my 2nd set of the Cooper AT3s and they are by far the best all around 35” all terrain. My truck mostly sees pavement but I haven’t had any issues with them when I’m off road. The road noise is minimal, and they wear great. For the last 10 years I have run Cooper tires on all my vehicles, and the only complaint I have is that after Cooper merged with Goodyear the shoulders are softer so they don’t corner as well as they used to.
My tire tread is every low and I haul a 5th wheel a lot during the summer. I will not be buying these tires again and I beleive I should get some kind of discount for poor life of these tore.
Had these tires on another truck before and were great. Bought these tires for the current truck and they are horrible. Have balanced them four times and still cannot get the shaking out of them. Removing them soon and going to Michelin tires.
After 1 year still look new, ride great, traction in snow and mud outstanding. Truck feels more planted than OEM Duratecs.
Sidewall strength appears to be weak. A little rolling felt when steering side to side. My Michelins did not do that. It’s an F250 super duty