I have stock-size BFG AT KOs on my 06 Taco. They give me a very slight shimy at high speeds often enough to be annoying. The Toyota dealer that put them on said 3 of the 4 tires were out of round and couldn't be balanced correctly. I have been meaning to go to the shop where I bought them (I originally had them on my 4runner for around 3K miles) to see what they can do. Just haven't found the time. If Toyota is right, these tires suck - especially given the price tag. I had zero shimy in the 06 Taco with the OEM tires (rode them for 250 miles) and a shimy in the 4runner with the BFGs. It's bullsh*t.