I’ve got 35k miles on mine (22 Wind, bought new). I’m taking it in for rotation/service next week and expect they’ll recommend new tires sometime this winter.
We only got 20,000 km on our RWD rears. Ouch.
Since the EV6 came with different tire brands, it’s kind of hard to compare mileage. But keep in mind, the GT has a much softer compound compared to the all-seasons that come on other models.