I had my wheel alignment checked/ adjusted this week at only 5000km. It was out significantly, which would suggest the factory doesn't align them too well on the production line.
So, if you want maximum tyre life (and possibly a nicer drive) get your alignment done!

(Mine now tracks better at higher speeds, but I did get a rim and tyre change at the same time.)
The above also matches up with what I've read other people post (tyres wearing unevenly/ prematurely.)