Which tire has the highest Treadwear (UTQG) in size 275/50R20

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 275/50R20?

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640 - Treadwear

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

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420 - Treadwear

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

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360 - Treadwear

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

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320 - Treadwear

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

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280 - Treadwear

 Continental ContiSportContact 5 - UTQG: 280AAA - Tire Rating: 0

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220 - Treadwear

 Michelin Pilot Sport 2 - UTQG: 220AAA - Tire Rating: 4.69

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

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