Which tire has the highest Treadwear (UTQG) in size 305/30R26

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 305/30R26?


500 - Treadwear

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


420 - Treadwear

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

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


400 - Treadwear

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