i have cooper discoverer st 315/75R16's... i put a lot of highway miles on my truck, but also use it in the fields and a lot of gravel lanes in and out of fields and what not. also, they rub on the control arm, and i always hear that sound when someone else drives it... point is, i have not seen any chunks coming off the tires or other abnormal wear, not even where they hit the control arm... price is good compared to BFG's too, $164 mounted and balanced