28X10X14 is the size I went with mounted on the STI HD5 Beadlock Wheel. I thought that for my ranch they would be perfect we have a 170 acres in the hill country with hard and soft packed roads, creek beds, and a huge hill on our property. The problems I am having is on the front end. I am going into a turn without any confidence with these tires. They are pushing me in a straight line while the ass end is coming around. So I am having to brake instead of letting the machine do the work like I could with the dirt commanders. I made the switch from the dirt commanders because my rear tires were pretty worn and I read that the front tires were kicking rocks and cracking radiators. So what I have done so far to try to combat this was filling up my tires to 28 PSI all the way around. The ass end wouldn't stop turning at that PSI and the front felt like it was going to vibrate off. So I lowered it to 15 PSI and it definitely handled better, but I still lost that confidence in the machine in turns at slow or high speeds. I am now running at 12 in front and 18 in rear and I haven't been able to drive it enough to tell you what I think yet. I like the height it gave my vehicle, but that means absolutely nothing to me if I can't have the same kind of fun I was having before. I tried asking someone yesterday who I noticed had my same set-up what they thought about their tires so far, but haven't heard anything back. I hope this helps in your decision and please feel free to ask anything else that you can think of.