Interesting. I have the 20s. No vibration at all. Very smooth. Bought from Discount Tire.Hello Water Trey,
I'm a big fan of the KO2's. I have them on my truck and many of our work (F150) truck's fleet have the KO2's. These tires will cut your gas mileage by one 1 or 2 mpg. However, after 10k miles on the tires, the Truck's MPG seems to go back to near normal.
For those who have the XD 20 inch wheels, Id like to share my KO2 story. I put new KO2s on at NTB (National Tire and Battery) - franchise. Had vibrations and went back several times for re-balance. Eventually after replacing several out of round KO2s, the truck still vibrated around 45 mph and up. NTB said my rims were bent. They are the stock aluminum rims. I called BS on that. After fighting with them, I went to a local family owned tire business. They checked the KO2s out and checked my rims for me. My rims were fine, three of the KO2s were out of round. The family owned tire shop had a "road force" tire balancing. NTB did not have this type of tire balancing equipment. After a total of 10 tires (KO2's) were put on and off my truck, I gave up and went with Nittro AT. It was a big long fight with BFG and NBT (National Tire and Battery). I started fighting the 3rd week of Nov and didn't get my money back until February.
To summarize, I don't recommend anyone going with the 20inch BFG KO2s unless your are buying the tires from a trusted tire business. The franchise companies will not fight for you. BFG had a bad batch of 20 inch KO2s. I'm still a big fan of the KO2s. But I will never try out another set on my XD.