Which tire has the highest Treadwear (UTQG) in size 275/45R18

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 275/45R18?


400 - Treadwear

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


280 - Treadwear

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

 Continental ContiSportContact 3 - UTQG: 280AAA - Tire Rating: 4.68

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

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

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


240 - Treadwear

 Michelin Primacy HP - UTQG: 240AA - Tire Rating: 4.17