Which tire has the highest Treadwear (UTQG) in size 305/40R22

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 305/40R22?

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500 - Treadwear

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

 Nitto Terra Grappler All-Terrain Light Truck Radial Tire - UTQG: 500AB - Tire Rating: 0

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460 - Treadwear

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

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420 - Treadwear

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

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

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

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

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

 Toyo Proxes ST - UTQG: 420AA - Tire Rating: 4.58

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

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400 - Treadwear

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

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

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360 - Treadwear

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

 Westlake SV308 - UTQG: 360AA - Tire Rating: 0

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320 - Treadwear

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

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