I just put my third pair on my Explorer. I have been averaging 55,000 per set and have driven them through every condition in this country: Cleveland winters, Oregon Springs, Chicago summer rain storms, Nevada 100+ temperatures, California Desert, a freak blizzard in AZ on I-40, Los Angeles traffic, Kentucky & Alabama summers, etc. I have driven the vehicle across country several times during both summer and winter months. I began using these tires (which came stock)on a new 2002 Explorer (purchased in 2001) and have never stopped. I average 30,000 miles a year on my vehicles and have always been impressed with the Michelins on my Explorers. My single complaint is that the 2006 Explorer came with 18 which consistently wear out much sooner about 55,000. My 2002 2WD had 16 and I consistently got 75,000 miles out of those. I diligently rotate every 5,000 miles when doing oil changes. Does size difference or 4WD contribute to faster wear? I'm sure the pros could debate it, but those are the facts. Either way the handling characteristics are excellent. I hear a rumor these tires are bing discontinued, I hope that's not true, after 10 plus years I wouldn't want to use any other tire on my Explorers!