I have had very good luck with the BFG All Terrain T/A's. With my work truck I run an average of 40km of pavement then 60+km of gravel daily, all year long. Describing the roads as "gravel" is a bit of a stretch as quite a few of these oilfield lease roads don't really have any... The road surface is a mixture of clay, 3/4" crush, and even 3" crush in a few areas - hard on tires. In the winter, it is pretty common to get a foot or more of snow in a 24 hour period and we don't get a grader out before it stops to snow so it is common to break trail in the snow (depending on temps, it could be a dry or wet snow). I generally replace my tires every fall and have always had good winter traction on and off road then burn them off the next summer (I have had at least a dozen sets and no issues with the tires). I wish I got better tire life, but life is full of compromises...