Which tire has the highest Treadwear (UTQG) in size 255/55R18

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 255/55R18?

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740 - Treadwear

 Continental CrossContact LX20 - UTQG: 740AB - Tire Rating: 0

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680 - Treadwear

 Continental TerrainContact A/T - UTQG: 680AA - Tire Rating: 0

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640 - Treadwear

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

 Toyo Open Country H/T - UTQG: 640AB - Tire Rating: 4.69

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600 - Treadwear

 Nitto Terra Grappler G2 All-Terrain Light Truck Radial Tire - UTQG: 600AB - Tire Rating: 0

 Kumho Road Venture APT KL51 - UTQG: 600AA - Tire Rating: 4.25

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560 - Treadwear

 Nitto Motivo All-Season Ultra High Performance Tire - UTQG: 560AA - Tire Rating: 0

 Continental ExtremeContact DWS 06 - UTQG: 560AAA - Tire Rating: 0

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540 - Treadwear

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

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520 - Treadwear

 Achilles Desert Hawk H/T - UTQG: 520AB - Tire Rating: 4.47

 Nexen Roadian HT - UTQG: 520AB - Tire Rating: 0

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500 - Treadwear

 Maxxis AT-771 Bravo - UTQG: 500AA - Tire Rating: 4.19

 Continental ProContact TX - UTQG: 500AA - Tire Rating: 0

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

 Kumho Solus KL21 - UTQG: 500AA - Tire Rating: 4.52

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480 - Treadwear

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

 Nankang SP-5 - UTQG: 480AA - Tire Rating: 4

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460 - Treadwear

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

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440 - Treadwear

 Michelin Latitude Tour HP - UTQG: 440AA - Tire Rating: 4.3

 Goodyear Wrangler HP - UTQG: 440AA - Tire Rating: 3.77

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420 - Treadwear

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

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

 Nexen Roadian 571 - UTQG: 420AA - Tire Rating: 3.37

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

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

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

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

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

 Maxxis HP-600 - UTQG: 420AA - Tire Rating: 4.38

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400 - Treadwear

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

 Sunitrac Focus 9000 - UTQG: 400AA - Tire Rating: 4.32

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360 - Treadwear

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

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

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

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320 - Treadwear

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

 Federal Couragia FX - UTQG: 320AA - Tire Rating: 4.25

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

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300 - Treadwear

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

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280 - Treadwear

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

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

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260 - Treadwear

 Goodyear Eagle RS-A - UTQG: 260AA - Tire Rating: 4.63

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240 - Treadwear

 Accelera IOTA - UTQG: 240AAA - Tire Rating: 4.25

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220 - Treadwear

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

 Pirelli Pzero Rosso - UTQG: 220AAA - Tire Rating: 4.36

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140 - Treadwear

 Bridgestone Turanza ER30 - UTQG: 140AA - Tire Rating: 3.55

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