My '05 has 6100 miles and is exhibiting 'Cupping' on the front tire.

It appears that the wear pattern is due to braking applied to the Front wheel. The zig-zag pattern digs the edge of the pattern into the pavement during braking and some lean. I use more front brake than rear.
I suspect that those riders who use more trail, rear, braking should experience the best frong tire results from the Bridgestones.

Once I get a few more miles I will go to AVONs with a different front wheel tread pattern.