I seem to be on track to reach about 50,000 miles on the OEM tires if I run them to 2/32", though if I replace them at the beginning of a rainy season if they are under 4/32", the mileage is likely to be around 40,000 miles at that time. I.e. the OEM tires were at 5/32" at about 25,000 miles.
I do notice at each rotation (approximately 6,250 miles between each) that the rear tires wear faster than the front tires.
Unlike most on these forums, I drive in a way that gets EPA economy / range or better when there is nothing on the roof rack. That was true for the previous cars that I have had, and I have generally gotten the advertised treadwear out of tires on those previous cars as well. It seems that driving habits that result in high electricity or fuel consumption also result in high tire consumption.