on my third winter with 37x12.5x15 rad iroks they work great last a long time, i dont freeway drive on them just 2 lane black top in the hills except about twice a year it goes down to fresno, or up to shaver on the freeway. at freeway speeds they are loader than normal, but i like them much better than the 36 iroks i had before. i dont like the 13.50's at all just seem to wide for me.probally wont buy these tires again becouse of the fact they priced them out of range, when i bought mine they just over 200 a peice, now over 300 i dont like that, if i was to spend that much per tire they better be a non DOT  comp compound. i have more than 50% left on them still. mileage unknown i dont track it.