My Conti DWS have treadwear of 540, up there with Nitto Motivo. All seasons are great in the rain (don't drive in snow) and pretty good grip in the dry. Handling isn't nearly as good as summer perf tires obviously but gets the job done.
__________________ 2008Ultrasonic Blue Mica IS-F | TOMS LTS, 20% 3M tint, Continental DWS, 2nd cat delete + straight pipes 1998 Milano Red Acura Integra LS
Tread wear ratings can't be compared between tire manufactures. I have Bridgestone RE11s which Bridgestone rates as a 180 tread wear. I get about 30-35k on my rear tires, and about 40k on the front tires.
Not every manufacture uses the standard for testing.
From what I found, Hankook and Nitto have these super high tread wear ratings...but their tires kinda don't last. My last sit of Nittos was NT555 and I think it has a tread wear rating of 300 and only lasted 20k miles.
I don't drive aggressively, so the tires are great. They are all-seasons, so the summer/dry performance won't match the RE11s JUST F ME is advocating. I would imagine that they would perform better in wet scenarios though, so consider that a trade-off.
They do slip easier than my last set of Potenzas. They don't roar at highway speeds, and sidewall does seem a bit soft compared to the Potenzas.
I'd say if you want dry performance and grip, the RE11s are the best choice.
I chose the Motivos for daily driving duty - all-season performance, and high tread-wear rating. I was promised 60k miles with their warranty. Let's see?