Which tire has the highest Treadwear (UTQG) in size 265/40R18

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 265/40R18?

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540 - Treadwear

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

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340 - Treadwear

 Continental ContiExtremeContact DW - UTQG: 340AAA - Tire Rating: 4.58

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320 - Treadwear

 Nankang AS-1 - UTQG: 320AA - Tire Rating: 4.46

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300 - Treadwear

 Michelin Pilot Super Sport - UTQG: 300AA - Tire Rating: 4.52

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280 - Treadwear

 Kumho Ecsta LE Sport KU39 - UTQG: 280AAA - Tire Rating: 4.38

 Continental ContiSportContact 3 - UTQG: 280AAA - Tire Rating: 4.68

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240 - Treadwear

 Toyo Proxes Sport - UTQG: 240AAA - Tire Rating: 0

 Continental ContiSportContact 5 P - UTQG: 240AAA - Tire Rating: 0

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220 - Treadwear

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

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180 - Treadwear

 Yokohama Advan Neova AD08 - UTQG: 180AAA - Tire Rating: 4.06

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140 - Treadwear

 Pirelli Pzero Assimetrico - UTQG: 140AA - Tire Rating: 4.38

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