For rocks, sand, mud, and dirt, our test mule was a '97 Jeep TJ with 17-inch Poison Spyder Customs beadlocked wheels. For snow and ice, wet pavement, and some additional mud testing, we ran the tires on a 2010 Dodge Ram 1500 with 17-inch American Racing Mojave wheels. In everything except for snow and ice, these tires performed exceptionally well. Due to a lack of siping and a compound better suited for hot climates, our encounters with snow-covered surfaces reminded us about the critical differences between an all-season tire and that of a winter tread. We would not expect to see many Grabbers in the Northern regions, where white stuff tends to stick around during the winter months.