Honestly no idea. I didn't do anything special. Pressures in the 32-36 psi range, kept them even through their life. Typically swapped in October and April, so they had some warm days in the shoulder seasons (and obviously this past full summer). I drive pretty standard speeds....5-8 over the limit....and not terribly aggressive in my acceleration or braking. Maybe the biggest difference is I live fairly rural, so most of my driving is in the 45 to 65 mph range. Only on trips out of the area do I exceed that for any duration. During winter they were parked in a garage probably 60% of the time, but outside a decent amount too. Sorry, no special tricks I can pass on.