Thanks for the reply. A rule of thumb I usually go by with the UTQG wear rating is multiply the number by 200 to get the life of the tire in km. But where I live we get so much rain the life becomes significantly longer. The original set of Goodyears I used year-round on my old Ford Windstar lasted over 100,000km and still had quite a bit of tread left when I replaced it with Bridgestone Turanzas. Those Goodyears had a UTQG rating of 350.