Which tire has the highest Treadwear (UTQG) in size 255/75R17

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 255/75R17?


740 - Treadwear

 Cooper Discoverer SRX - UTQG: 740AB - Tire Rating: 0


680 - Treadwear

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