Normal tire wear or alignment issue?

[Rus]

Hello everyone,

I've just noticed that all of my tires show a strange wear pattern that I haven't seen before. As you can see in the pictures below, the thread shoulder on the inner side of the tire is worn at an angle uniformly around the circumference. The thread depth doesn't appear to change over the width of the tire. The tires have about 3000 miles on them and are Yokohama YK520 tires on regular E34 basketweaves. Since all of the tires show this kind of wear, is it an alignment issue? This wear would normally be seen with excessive toe-out or excessive camber. The car is not lowered, so camber doesn't seem to be an option. The Owner's Manual mentions that tires shouldn't be rotated front to back due to the unique wear pattern. Am I observing the regular wear pattern then?

Thanks in advance for any input.

Pictures:



Edit: I have not observed any pulling while driving. On a smooth level road the car will continue traveling straight with hands off of the wheel.