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Cooper Discoverer ATP II
Upgrade your truck or SUV with the Cooper Discoverer ATP II LT275/70R18 125S E1 RWL, an exclusive all-terrain tire built for pickups and SUVs that need confident off-road traction, wet-road control, and steady highway manners. This LT275/70R18 Discoverer ATP II is a popular fitment for select Ram 2500, Chevrolet Silverado 2500HD, GMC Sierra 2500HD, Toyota Tundra, Ford F-250, Ford F-350 models, plus similar heavy-duty pickups, work trucks, towing setups, and trail-ready SUVs using 18-inch wheels.
Best for: work trucks, overlanding builds, and weekend adventure vehicles that need year-round all-terrain confidence with LT-rated strength for towing, hauling, and rough-road use, especially in a LT275/70R18 size with 125S E1 capability.
Why choose the Cooper Discoverer ATP II in LT275/70R18?
All-terrain traction: Alternating shoulder scallops and wide off-road shoulder tread blocks help the ATP II dig into loose terrain like dirt, mud, gravel, and sand.
Wet and winter-road control: Wet Grip Grooves and Snow Claw technology help support grip on rainy pavement, slushy roads, and light winter conditions.
Durability for truck use: Stone Ejector Ledges help reduce stone retention, while rugged shoulder lugs add traction in aired-down driving and help resist damage away from pavement.
Highway stability: A solid center rib, stable tread area, interlocking sipes, and durable tread compound help deliver predictable handling and long-lasting all-terrain performance.
Comfort and warranty: Proprietary tread block sizing and spacing support a smoother, quieter ride, and the Cooper Discoverer ATP II is backed by a 60,000-mile manufacturer's treadwear warranty.
Popular vehicle fitments for LT275/70R18 Cooper Discoverer ATP II
This tire size is commonly shopped for select trims or replacement applications of the Ram 2500, Chevrolet Silverado 2500HD, GMC Sierra 2500HD, Toyota Tundra, Ford F-250, and Ford F-350. It is also a strong all-terrain option for comparable vehicles that use the same tire size, load range, speed rating, wheel diameter, and sidewall designation.
Size and rating details
LT275/70R18: This size is designed for 18-inch wheels and is a practical choice for drivers who need LT-rated strength for towing, hauling, off-road travel, and work-truck duty.
125S E1: The LT construction and 125S E1 service description are built for heavier-duty truck and SUV applications that see towing, hauling, gravel roads, and jobsite use.
RWL: This version uses raised white lettering sidewall styling.
Speed capability: This size carries S-rated speed capability for truck and SUV applications that balance all-terrain utility with highway use.
| 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. | 70 |
| RIM DIAMETER Measures the rim size from top to bottom (in inches). | 18" |
| OVERALL DIAMETER Measures the tire height from top to bottom when mounted on a wheel and inflated. | 33.46" |
| RIM WIDTH RANGE The approved range of rim widths this tire can be safely mounted on. | 7.0" - 8.5" |
| WEIGHT The weight of the tire measured in pounds (weight of tire only). | 58 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. | 125 |
| 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 | 170199020 |
| GTIN Global Trade Item Number | 029142930457 |
Customer Reviews
Service was awesome
Too early to tell if tires are wearing according to expectations.
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