These tires replaced a set of Michelin Pilot Exaltos, which are excellent tires. On most measures I would consider the Yokohama to be even better. Dry and wet traction are both excellent, and better than the Michelins. Cornering is excellent. Snow traction is clearly much better than the Michelins.
I do not have enough miles on these tires to comment on treadwear.
The only negative I can think of is that these tires are a bit louder in hard cornering. This is no reason not to buy them, but they are going to let you know when you push the limit. That may actually be a good thing.
One final comment that I think is a bit of an anomaly: This set of tire were balanced three times in the first 750 miles. Basically that means at the original installation and once a week thereafter. There was a subtle high speed (65-70 MPH) balance problem. Neither of the re-balance efforts helped. The problem simply vanished on its own at about 1000 miles.
In summary, I am extremely pleased with these tires and would not hesitate to recommend them. Treadwear is as yet unknown, but the Michelins they replaced made it to 54,000 miles. I would be happy if these Yokohamas reach 40,000 miles.