Which tire has the highest Treadwear (UTQG) in size 285/55R18

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 285/55R18?

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400 - Treadwear

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

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320 - Treadwear

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

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

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