Which tire has the highest Treadwear (UTQG) in size 205/50R15

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 205/50R15?

---

520 - Treadwear

 Sonar SX-608 - UTQG: 520AA - Tire Rating: 4.63

---

480 - Treadwear

 Dunlop SP Sport LM703 - UTQG: 480AA - Tire Rating: 4.25

---

460 - Treadwear

 Dunlop Direzza DZ102 - UTQG: 460AA - Tire Rating: 0

---

400 - Treadwear

 Kumho Ecsta AST KU25 - UTQG: 400AA - Tire Rating: 3.93

---

360 - Treadwear

 Marshal Matrac FX MU11 - UTQG: 360AAA - Tire Rating: 4.03

---

340 - Treadwear

 Hankook Ventus HR II H405 - UTQG: 340AA - Tire Rating: 4.38

---

320 - Treadwear

 Kumho Ecsta SPT KU31 - UTQG: 320AAA - Tire Rating: 4.17

 Hankook Ventus Prime K105 - UTQG: 320AAA - Tire Rating: 4.3

---

300 - Treadwear

 Toyo Proxes 4 - UTQG: 300AAA - Tire Rating: 4.26

 Yokohama S.DRIVE - UTQG: 300AAA - Tire Rating: 4.33

---

280 - Treadwear

 GT Radial Champiro-328 - UTQG: 280AAA - Tire Rating: 3.96

 Dunlop SP Sport 01 - UTQG: 280AA - Tire Rating: 4.24

 Toyo Proxes T1R - UTQG: 280AAA - Tire Rating: 4.65

 Hankook Ventus Sport K104 - UTQG: 280AAA - Tire Rating: 4.38

 Continental ContiPremiumContact 2 - UTQG: 280AAA - Tire Rating: 4.46

 RunWay Enduro-916 - UTQG: 280AAA - Tire Rating: 0

 Hankook Ventus V12 evo K110 - UTQG: 280AAA - Tire Rating: 4.02

---

260 - Treadwear

 GT Radial Champiro 50 - UTQG: 260AA - Tire Rating: 3.38

 Federal SS 535 - UTQG: 260AA - Tire Rating: 4.29

---

240 - Treadwear

 Michelin Pilot Exalto 2 - UTQG: 240AA - Tire Rating: 4.57

---

200 - Treadwear

 Nitto NT05 Max Performance Tire - UTQG: 200AAA - Tire Rating: 0

 BFGoodrich g-Force Rival S - UTQG: 200AAA - Tire Rating: 0

---

180 - Treadwear

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

---

50 - Treadwear

 Kumho Ecsta V70A - UTQG: 50 - Tire Rating: 0

---