Which tire has the highest Treadwear (UTQG) in size 275/45R20

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 275/45R20?

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640 - Treadwear

 Nitto NT421Q Premier All-Season Crossover - UTQG: 640AA - Tire Rating: 0

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540 - Treadwear

 Continental ExtremeContact DWS - UTQG: 540AA - Tire Rating: 0

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520 - Treadwear

 Cooper Zeon LTZ - UTQG: 520AB - Tire Rating: 0

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480 - Treadwear

 Continental CrossContact LX Sport - UTQG: 480AA - Tire Rating: 0

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460 - Treadwear

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

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420 - Treadwear

 Nankang SP-7 - UTQG: 420AAA - Tire Rating: 4.31

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

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

 Nankang N990 - UTQG: 420AAA - Tire Rating: 3.63

 Continental ContiCrossContact UHP - UTQG: 420AAA - Tire Rating: 4.68

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

 Yokohama Parada Spec-X - UTQG: 420AA - Tire Rating: 4.55

 Federal Couragia S/U - UTQG: 420AA - Tire Rating: 4

 Maxxis MA-Z4S Victra - UTQG: 420AAA - Tire Rating: 4.11

 Marshal Matrac STX KL12 - UTQG: 420AA - Tire Rating: 4.66

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400 - Treadwear

 Achilles Desert Hawk UHP - UTQG: 400AA - Tire Rating: 4.63

 Pirelli Scorpion Zero - UTQG: 400AA - Tire Rating: 3.53

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360 - Treadwear

 Continental Conti4x4Contact - UTQG: 360AA - Tire Rating: 3.94

 Maxxis MA-S2 Marauder II - UTQG: 360AA - Tire Rating: 4.08

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320 - Treadwear

 Kumho Ecsta X3 KL17 - UTQG: 320AAA - Tire Rating: 4.63

 Yokohama Advan ST - UTQG: 320AAA - Tire Rating: 4.55

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300 - Treadwear

 Bridgestone Dueler H/P Sport - UTQG: 300AA - Tire Rating: 4.09

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280 - Treadwear

 Aeolus AU01 - UTQG: 280AAA - Tire Rating: 3.81

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220 - Treadwear

 Michelin Latitude Sport - UTQG: 220AAA - Tire Rating: 4.88

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180 - Treadwear

 Yokohama Advan Sport V103 - UTQG: 180AAA - Tire Rating: 4.38

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