Which tire has the highest Treadwear (UTQG) in size 225/75R15

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 225/75R15?

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680 - Treadwear

 Kumho Solus KR21 - UTQG: 680AB - Tire Rating: 4.5

 Continental ContiCrossContact LX - UTQG: 680AB - Tire Rating: 4.17

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640 - Treadwear

 Kumho Road Venture SAT KL61 - UTQG: 640AB - Tire Rating: 4.29

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600 - Treadwear

 Kumho Road Venture APT KL51 - UTQG: 600AA - Tire Rating: 4.25

 Goodyear Fortera - UTQG: 600AB - Tire Rating: 4.23

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580 - Treadwear

 BFGoodrich Radial Long Trail T/A - UTQG: 580AB - Tire Rating: 4.25

 Goodyear Wrangler TrailRunner AT - UTQG: 580AB - Tire Rating: 0

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520 - Treadwear

 Pirelli Scorpion STR - UTQG: 520AB - Tire Rating: 3.57

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500 - Treadwear

 Toyo Open Country A/T - UTQG: 500AB - Tire Rating: 4.52

 Maxxis AT-771 Bravo - UTQG: 500AA - Tire Rating: 4.19

 Aeolus AS02 - UTQG: 500AA - Tire Rating: 4.38

 Michelin LTX M/S - UTQG: 500AB - Tire Rating: 4.52

 Nexen Roadian AT - UTQG: 500AB - Tire Rating: 4.5

 Kumho Road Venture AT KL78 - UTQG: 500AB - Tire Rating: 4.39

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480 - Treadwear

 Firestone Destination A/T - UTQG: 480AB - Tire Rating: 4.27

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460 - Treadwear

 Hankook Dynapro AT RF08 - UTQG: 460BA - Tire Rating: 4.69

 GT Radial Savero AT PLUS - UTQG: 460AB - Tire Rating: 4

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440 - Treadwear

 Pirelli Scorpion ATR - UTQG: 440AB - Tire Rating: 4.04

 Cooper Trendsetter SE - UTQG: 440AB - Tire Rating: 0

 Hankook DynaPro AS RH03 - UTQG: 440AB - Tire Rating: 4.72

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420 - Treadwear

 Goodyear Fortera Confortred - UTQG: 420 - Tire Rating: 0

 Maxxis MA-751 Bravo - UTQG: 420AB - Tire Rating: 4.23

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400 - Treadwear

 Bridgestone Dueler A/T - UTQG: 400AB - Tire Rating: 3.93

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180 - Treadwear

 Bridgestone Dueler HT 689 - UTQG: 180BB - Tire Rating: 0

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