What are your tire pressures set at?
The marks left are not fully even across the tread, double check your pressures so that you can leave nice, even "footprints" and ensure even wear.
Hmm, last time I filled them to 35psi. Maybe it's time for that free America's tire, tire rotation. Although, I am trying to kill these things asap so I can upgrade to the 285's. Wife insists these things go bare before I drop another grand on tires... :whipping2: