I'm currently at about 23,000 miles after 50-54 months on my set of Pilot Exalto A/S tires. One tire developed 'radial pull' recently so I can't rotate my tires again, since when it's in the front, the car pulls to the side. On the rear, I don't notice it at all, so it has to stay there. I expect to get to just under 30K miles out of this set due to the fact that I can't rotate them anymore - if I could, maybe 35K. Harsh city miles on some of the nation's worst roads, I should point out.
My tires have a little bit of weathering but nothing major. The reason why I rate this tire so highly is its exceptional traction. Wet and dry traction has been outstanding. I drive spiritedly (which is probably why I get less miles out of my tires than the normal person) and my car feels like a tank w/ these tires. After 4-5 years, I still have NO problems in the rain. My tires chirp once in a while but never spin even when I floor it while getting on the freeway. Noise has been slowly increasing as the tires have aged but what tire doesn't? It's tolerable - and my car is exceptionally quiet anyway - so I'm willing to sacrifice noise levels for safety and handling. Tires in Hawaii start cracking due to the hot sun, so I replace my tires every 5-6 years regardless of mileage anyway.. We don't drive much but I refuse to cheap out on tires as they're the only things keeping you on the road. The Pilot Exaltos are not cheap but I don't think I'll ever be able to go back to another tire! I feel safe w/ these. I feel comforted knowing my mom's Camry also has these tires. They handle extremely well and most importantly, are consistent and predictable.
Bottom line: these tires wear faster than most due to their stickiness. Do not buy these for tread life, buy them for their handling. I will most definitely be buying another set. These tires are like glue on the road! My mom's Pilot Exaltos are at 5 years and 18K (yes, 18K!) miles on her set, no cracking, and they drive like new.