I've had very good service from B.F. Goodrich All Terrain T/A's on our Wrangler. We're on our second set. They offer decent off-road traction and good handling on dry and wet pavement.
I'm not a rock climber or serious off-roader, but the Mrs. and I do like to occasionally drive the off-road trails at the local State forests. We've encountered mud, water, inclines, minor rock bed's, etc. The B.F.'s have always performed well.
Our Wrangler is stock with no modifications. The tire size is 30X9.5X15", which was a factory upgraded size. I believe the T/A's are available in standard tire size's, as well.
Another tire I've had excellent service from is the Kelly Springfield SJR. This has been an outstanding tire on our Explorer. What I like most is its handling on wet roads. Far superior than any tire I've ever used on an SUV or Truck. Its does very well in the snow and on dirt roads, wet or dry. While I do not use the Explorer for off road four wheeling, there have been occasions where I've needed 4WD during hunting season. The Kelly's have done well during those times.
