Which tire has the highest Treadwear (UTQG) in size 275/60R17

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 275/60R17?

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740 - Treadwear

 Continental CrossContact LX20 - UTQG: 740AB - Tire Rating: 0

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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

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520 - Treadwear

 Achilles Desert Hawk H/T - UTQG: 520AB - Tire Rating: 4.47

 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

 Yokohama Geolandar H/T-S G051 - UTQG: 500AB - Tire Rating: 4.3

 Yokohama Geolandar A/T-S G012 - UTQG: 500AB - Tire Rating: 4.52

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460 - Treadwear

 Nexen Roadian HP - UTQG: 460AA - Tire Rating: 4.13

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420 - Treadwear

 Toyo Proxes ST 2 - UTQG: 420AA - Tire Rating: 4.43

 Nitto NT420S All-Season Tire - UTQG: 420AA - Tire Rating: 0

 Kumho Ecsta STX KL12 - UTQG: 420AA - Tire Rating: 4.5

 Hankook Ventus ST RH06 - UTQG: 420AA - Tire Rating: 4.75

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