It looks like you have to much camber and it might be toe-ed in a little bit to much. Run your hand from the outside to the inside of the tire. Do you feel a feathered edge? How about inside to outside, smooth? Also rebalance your tires. How often do you rotate your tires.
, I notice when I run my hand from outside to inside, that there are ridges in the tire, but only in certain spots, not just a single ridge, there are cups at various spots in the tire. In other words, if I put a straight edge in line with the tread valleys, and run it from the outside to the inside, it would be stopped by the raised ridges in certain parts of the tire. From the inside, back to the outside, it would travel without stopping. Does that make sense?
Also, because the tires were worn/cupping after about 9 months, I kept putting the repair off and each time I did a tire rotation, I only wanted the fronts moved from left to right. The rear tires are still in very good shape. I know that I will be buying all 4 new tires when I get the suspension/alignment fixed... I just want a good mechanic so that this doesn't happen again.