I put 22,000 miles on my rears, Hankooks Ventus V12, no problem, When the tires,all four, were put on I could not find a shop that could align the rears, one shop said they could and after doing the fronts said they could not and said no charge for the front alignment. When I replaced the rears after 22,000 miles the inner wear was hardly noticeable, maybe 1/32" and maybe the same over the wear bars.
I am looking to replace the fronts now just because they are old.
I do not race around though at my age.