I've owned a No-Mar tire changer for the last 12 years, have changed over a thousand tires now and just about every street tire has shown more wear on the left side compared to the right side. In the US, a typical left hand turn is about 4 times the radius of a right hand turn. So not only are you in the turn a little longer, you will also be going just a bit faster taking a left than a right turn. If you take one of your old tires, hold it with your hand on a level surface straight up. Now tilt the tire until the contact patch of the worn down area is in full contact with the level surface, you will see the tire is leaned over further than the single digit angle of most roads, it's not the grade of the road, or alignment issue.
