I had a set of Michelin Country Dry, 26x2.15, on my bike for three years (except for Dec, Jan, & Feb, when I needed 'snow tires' and only rode 30 mi./week); without tracking miles during the other 9+ months of the year, I feel reasonable estimating 12,000 miles of pedaling on those babies. One bike, daily commute (2-9 miles one way), fun rides alone AND with the kids, and utility rides....