Which tire has the highest Treadwear (UTQG) in size 30x9.5R15

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 30x9.5R15?

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640 - Treadwear

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

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500 - Treadwear

 Falken WPAT01 WildPeak A/T - UTQG: 500AB - Tire Rating: 4.69

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

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460 - Treadwear

 Dunlop Grandtrek AT3 - UTQG: 460AB - Tire Rating: 4.35

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

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420 - Treadwear

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

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