I'm going on 3 years with these tires and getting ready to rotate for the second time. With just over 12,000 miles on them, I am halfway to the wear bars, so I expect less than 25K miles out of these tires. I am really dissappointed with the life of these tires.
I think these tires might have a too weak of a sidewall for in-town driving that requres a lot of sharp turns in a Suburban as I find the outside edges of the tread are really chewed up after extended driving that doesn't involve highway miles. Any hard cornering feels like the tire is going to roll off the rim.
Straight line/highway driving is where these tires excel. These tires are really quiet and have great traction in all conditions, including snow.