Which tire has the highest Treadwear (UTQG) in size 33X12.5R15

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 33X12.5R15?

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640 - Treadwear

 Kumho Road Venture SAT KL61 - UTQG: 640AB - Tire Rating: 4.29

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500 - Treadwear

 Kumho Road Venture AT KL78 - UTQG: 500AB - Tire Rating: 4.39

 Yokohama Geolandar A/T-S G012 - UTQG: 500AB - Tire Rating: 4.52

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420 - Treadwear

 Maxxis MA-751 Bravo - UTQG: 420AB - Tire Rating: 4.23

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