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Cooper Discoverer ATP II
Choose the Cooper Discoverer ATP II LT285/70R17 121S 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 LT285/70R17 Discoverer ATP II is a popular fitment for select Ram 1500, Jeep Wrangler, Toyota 4Runner, Ford F-150, Chevrolet Silverado 1500, Toyota Tacoma models, plus similar heavy-duty pickups, work trucks, towing setups, and trail-ready SUVs using 17-inch wheels.
Best for: pickup and SUV owners who want aggressive all-terrain traction with highway stability and ride comfort with LT-rated strength for towing, hauling, and rough-road use, especially in a LT285/70R17 size with 121S E1 capability.
Why choose the Cooper Discoverer ATP II in LT285/70R17?
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 LT285/70R17 Cooper Discoverer ATP II
This tire size is commonly shopped for select trims or replacement applications of the Ram 1500, Jeep Wrangler, Toyota 4Runner, Ford F-150, Chevrolet Silverado 1500, and Toyota Tacoma. 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
LT285/70R17: This size is designed for 17-inch wheels and is a practical choice for drivers who need LT-rated strength for towing, hauling, off-road travel, and work-truck duty.
121S E1: The LT construction and 121S 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.
285/70-R17
Customer Reviews
Very good value.
I ran KO2s on all of my trucks. I went out on a limb and tried the ATP II’s and wish I would have bought them sooner. Road noise is much less. The tread is still aggressive if in a sticky situation, but roll very well as a radial. I have them on a 19 Duramax, other than driving on my property or at the lake, locking in 4WD is seldom necessary. They look great too. I have a 3 on tread life because I only have about 8K miles so far.
They are doing quite well. I have hauled heavy and towed a large travel trailer with them, as well as driven on all types of roads and even handy dirt paths. Never felt any issues with traction or maneuverability. Very happy with them.
I would buy them again