How do the Nittos perform as they wear?
The Revos are advertised to continue performance as they wear (special resins, dual layer tread, etc).
I've never run a tire close to the treadware mileage. They always start to slip/hydroplane/etc. If the advertising holds true, the Revos should go more miles than I normaly expect.
It would be interesting for CR to review new tires, and the same tire with 20k miles.
I'm starting to lean away from the KOs. More previous owners seem to dislike their on-road manners.