Which tire has the highest Treadwear (UTQG) in size 305/35R20

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 305/35R20?


320 - Treadwear

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


300 - Treadwear

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