Which tire has the highest Treadwear (UTQG) in size 275/65R20

It's time to buy new tires for my car, but I want to buy a tire that lasts longer than the original brand, OEM. Which tire has the highest Treadwear in this size 275/65R20?


680 - Treadwear

 Continental TerrainContact A/T - UTQG: 680AA - Tire Rating: 0


600 - Treadwear

 Nitto Dura Grappler Highway Terrain Light Truck Tire - UTQG: 600AB - Tire Rating: 0

 Nitto Terra Grappler G2 All-Terrain Light Truck Radial Tire - UTQG: 600AB - Tire Rating: 0