I replaced the Forteras with Cooper Discoverer ATRs on my black 07 XK 4.7 Sport and I was very impressed by them. I ran them in the snow and they were great. Never got to off-road them because I wrecked it a month before an outing. When I got my 06 XK Hemi Limited I replaced the Forteras with Hankook DynaPro ATMs. I have off-roaded them and run them in the snow and they performed great Both sets were the stock size 245/65/17. Due to bending a lower control arm, the Hankooks have worn unevenly and need to be replaced. I am going to replace the Hankooks with the new Cooper Discoverer AT3 in 255/70/17 in about 3 weeks. I will let everyone know how they handle off-road after November Jeepskool.