How long have you been running them? Have you gone through a complete tire life cycle? I' ve got the 315 nittos and figure I will get around six months to year Bald. Driving approx 40 mile a day highway. I am just curious if you guys with non nittos notice more rubber burn off due to the non-grip factor and if the tires actually last if you are aggresive with the gas. Thanks in advanced for your response.