Size 305-55- Tires
Save $30 Cyber
Save $30 on a set of four tires with GTCYBER30 coupon code.
Cooper Discoverer AT3 XLT LT305/55R20 F/12PLY BSW
60,000 Warranty
All Terrain
- Truck/SUV - All Terrain
- See details
UP TO $120 BACK
Buy a set of 4 tires and get back $120.
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Compare tires at a glance using our easy test score® system. Our proprietary algorithm factors in performance, expert insights, user reviews, and Uniform Tire Quality Grading (UTQG) scores.
Four criteria factor into easy test score®
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Consumer reviews
Research based on customer reviews and buying behavior
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Treadwear
The lifespan of a tire based on wear performance
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Traction
The ability of a tire to grip to the road in wet conditions
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Expert ratings
Input from veteran tire industry experts
