I recently replaced my Hankook Ventus S1s at 15,900 miles. Probably had another 1,500 miles on them but I hit something on the road that destroyed my front right (and bent the wheel as well) so was a bit early with replacements.
I've always run Pilot Sport 4s's on my M5 so that was what I had planned to switch to since the car was new. I've tried a few others but nothing compared to the cornering of the PSS 4s's and the change on my if M50 was noticeable when I switched out the Hankooks.
I only wish I read
@cruzer666 s post below relating to rolling resistance beforehand because I can attest that the 4s's decimated my range. I averaged 3.4mi/kWh on my commute in moderate traffic and that plummeted to 2.7mi/kWh. I always drive fast and generally accelerate pretty hard so that 3.4 could have been better had I been a little gentler right foot. When I really tried to improve it on the PSS 4s's and drive as if I had my mom in the car with me, the best I could get was 2.9 - 3.0. Eco-pro mode didn't really impact the mileage.