Which tire has the highest Treadwear (UTQG) in size 255/60R17

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 255/60R17?


640 - Treadwear

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


600 - Treadwear

 Yokohama Geolandar SUV G055 - UTQG: 600BA - Tire Rating: 0


520 - Treadwear

 Pirelli Scorpion STR - UTQG: 520AB - Tire Rating: 3.57


500 - Treadwear

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


480 - Treadwear

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


420 - Treadwear

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

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


400 - Treadwear

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

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


360 - Treadwear

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

 Falken Ziex ZE-912 - UTQG: 360AA - Tire Rating: 4.02


320 - Treadwear

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

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

 Marshal Matrac X3 KL17 - UTQG: 320AAA - Tire Rating: 4.54