Well, given that the factory recomended 2 degs. of toe out on each side, and it is nervous and darts this way and that, it probably is scrubbing out the fronts.

On the other hand, cars seem to come out of the factory with their front tracking all over the place, and leave it to the dealers to set, some do and some don't, apparently?

Given the acknowledged problem with bump steer and the factory efforts at reducing it, fairly unsuccessfully it would appear, I think it is little wonder that front tyres are wearing badly. I should have thought they should last at least 10,000 miles, what's that, about 17,000k?