Nitto Mud Grappler
Let me first start off by saying that when I first saw this tire a while ago, I thought it would be for mall crawlers and posers. Boy, was I wrong. These tires are amazing. This weekend was my first real test for these tires. I went to the Mounds offroad park and began playing. With street pressure (32 psi) the tires would just not stop grabbing. There was a point on the day where I was plowing through some seriously deep muddy ruts. I, of course, felt the Rubi slowing as I was getting hung up on the axles. I put my foot to the floor and the Jeep literally took off. The tires just grabbed the soupy mud without any trouble and have me plenty of traction.
After a ways, I got hung up on the axles. I got out to see that I had been dragging the axles pretty deep in the somewhat solid center for a good ways, but the tires still had enough bite to keep towing me through. I got back in and threw the Rubi in reverse. They even were able to pull me backwards and get another run at the hole I got stuck in. I tried to power through, but had to be towed out at the end. Never the less, if I had 35's rather than 33's, I would have easily made it through.
On the street, these tires sound like a speed boat at 25 mph, and an airplane beyond that. For some reason, I can't wipe the smile off my face when I hear that sound. Other than the buzz, they ride smoothly over the bumps, and don't have much vibration other than at slow speeds.
Overall, if you're like me, a student who only drives to work in the summer and to the trails during the school year, they are a great tire. However, I can't imagine them getting very many miles due to their design (no first hand experience with this though)
Oh, and they look much more aggressive than in the picture.