Which tire has the highest Treadwear (UTQG) in size 215/60R15

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 215/60R15?


780 - Treadwear

 Cooper CS5 Grand Touring - UTQG: 780AA - Tire Rating: 0


680 - Treadwear

 Kumho Solus KR21 - UTQG: 680AB - Tire Rating: 4.5


620 - Treadwear

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

 Pirelli P3000 - UTQG: 620AA - Tire Rating: 4.23


520 - Treadwear

 Nankang XR611 - UTQG: 520AA - Tire Rating: 4.13


500 - Treadwear

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


480 - Treadwear

 Bridgestone Ecopia EP422 - UTQG: 480AA - Tire Rating: 0


440 - Treadwear

 Kumho Solus KH18 - UTQG: 440AA - Tire Rating: 4.19


420 - Treadwear

 Sailun Atrezzo SH402 - UTQG: 420AA - Tire Rating: 4.01


400 - Treadwear

 Nexen CP641 - UTQG: 400AA - Tire Rating: 4.22

 Nexen CP661 - UTQG: 400AA - Tire Rating: 4.05

 Toyo Proxes TPT - UTQG: 400AA - Tire Rating: 4.52


380 - Treadwear

 Dunlop SP Sport LM702 - UTQG: 380AA - Tire Rating: 4.45


340 - Treadwear

 Nexen N2000 - UTQG: 340AAA - Tire Rating: 4.42

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


300 - Treadwear

 Yokohama A.DRIVE - UTQG: 300AA - Tire Rating: 4.43

 Yokohama C.DRIVE - UTQG: 300AA - Tire Rating: 4.38


180 - Treadwear

 Pirelli P6000 - UTQG: 180AA - Tire Rating: 3.76