I bought these tires a couple months ago, based on the test ratings on this website. As usual, the Tire Rack ratings were dead on! I drive (on average) about 2,000 miles per week, and live in west Michigan. Due to the unpredictable nature of Michigan weather, I needed a tire that performed well in all weather conditions. These tires do everything they say they do, and at a good price.
I was concerned, having a rear-wheel drive car, that an all-season tire would not perform well enough for winter driving. Acceleration at times can be a struggle, but I've never had an issue with traction, when every other vehicle on the road didn't have the same problems. Stopping on icy, slushy, and snow covered roads is NEVER a problem. I've never had a set of tires that allows me to stop like these tires do.
In dry conditions, I don't think there is an UHP-tire available that out-perfoms these. I'm sure there are others that perform as well, but it would be a stretch to say they are better. The tires that are as good, are generally more than twice the price. The only tires that I would consider relatively equal both in performance and price, would be the Continental Extreme Contact DWS'. I think the tread wear is a little better on the Hankook tires though.
Road noise (on good roads) is all but non-existant. My car runs 40 series up front, with 35 series in the rear. I expected these tires to have a very harsh ride, but they are surprisingly comfortable. As anticipated, corner roll doesn't happen, but it shouldn't with such a low-profile tire. Heat disipation is good. I've only had them in weather up to 65 F at this point, but they have never felt surprisingly warm, even after several miles of spirited curved road driving.
The only complaint I have, is these tires track pretty bad on grooved roads. It may be due to the 225 front, and 255 rear widths, but I didn't notice this issue with the Goodyear tires my car came with.
Overall, Exceptional Tires