The Moab "slickrock" actually offers pretty good traction when wet. When the going gets really steep though even dry surfaces are a challenge. We did an optional climb while I was out there. It is nearly vertical from the drivers perspective. I started up, probably with a little too much throttle.I had all lockers engaged and was about 50 yds up when ALL FOUR tires began to howl and lose traction. Talk about a pucker factor

There is a LARGE tree at the bottom that would be unavoidable if you came down too fast. I eased off the gas and onto the brake, the G slid back about a foot and stopped. Gently getting back on the gas brought us right up to the top. Doing that one in the wet would be foolish, though there are lots of trails that would be easily passable with just a little extra caution