Which tire has the highest Treadwear (UTQG) in size 235/50R18

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 235/50R18?

700 - Treadwear

 Continental PureContact - UTQG: 700AA - Tire Rating: 0

 Toyo Versado LX - UTQG: 700AB - Tire Rating: 4.59

620 - Treadwear

 Cooper CS5 Ultra Touring - UTQG: 620AA - Tire Rating: 0

560 - Treadwear

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

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

 Continental SureContact RX - UTQG: 560AAA - Tire Rating: 0

540 - Treadwear

 Continental ControlContactSport A/S - UTQG: 540AA - Tire Rating: 0

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

520 - Treadwear

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

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

500 - Treadwear

 Cooper Zeon RS3-A - UTQG: 500AAA - Tire Rating: 0

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

 Nexen CP672 - UTQG: 500AA - Tire Rating: 4.57

480 - Treadwear

 Michelin Energy Saver A/S - UTQG: 480AB - Tire Rating: 0

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

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

460 - Treadwear

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

440 - Treadwear

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

 Aeolus AU02 - UTQG: 440AAA - Tire Rating: 4.75

420 - Treadwear

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

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

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

400 - Treadwear

 Hankook Optimo K415 - UTQG: 400AA - Tire Rating: 4.61

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

 Toyo Versado LX 2 - UTQG: 400AA - Tire Rating: 4.5

 Continental ContiProContact - UTQG: 400AAA - Tire Rating: 4.23

380 - Treadwear

 Sailun Atrezzo Z4+AS - UTQG: 380AAA - Tire Rating: 0

360 - Treadwear

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

340 - Treadwear

 Rotalla F105 - UTQG: 340AA - Tire Rating: 0

 Kumho Solus KH15 - UTQG: 340AAA - Tire Rating: 4.18

 Sailun Atrezzo ZS+ - UTQG: 340AA - Tire Rating: 3.92

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

320 - Treadwear

 Nitto NT555 G2 Summer Ultra High Performance Tire - UTQG: 320AAA - Tire Rating: 0

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

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

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

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

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

300 - Treadwear

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

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

 Cooper Zeon RS3-S - UTQG: 300AAA - Tire Rating: 0

 Nitto NT555 Summer Ultra High Performance - UTQG: 300AA - Tire Rating: 4.13

 Michelin Pilot HX MXM4 - UTQG: 300AA - Tire Rating: 3.17

280 - Treadwear

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

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

 Accelera PHI - UTQG: 280AAA - Tire Rating: 4.38

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

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

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

 Goodyear Eagle F1 GSD3 - UTQG: 280AAA - Tire Rating: 3.88

 Nexen N8000 - UTQG: 280AAA - Tire Rating: 4.5

 Continental ContiSportContact - UTQG: 280AA - Tire Rating: 3.75

 Jinyu YU61 - UTQG: 280AAA - Tire Rating: 4.04

240 - Treadwear

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

 Toyo Proxes T1 Sport - UTQG: 240AAA - Tire Rating: 4.5

 Goodyear Eagle Excellence - UTQG: 240AA - Tire Rating: 3.71

180 - Treadwear

 Yokohama Advan Sport V103 - UTQG: 180AAA - Tire Rating: 4.38