I run 35/12.5/20 Toyo MT's on my 07 F350, I run alot of mud and gravel. The tires are awesome in the mud and look pretty cool but I find that they are getting pretty chewed up. I paid $2400 for the four of them so I'm not sure if i would choose them again. I do need 10 ply tires but since I only average 20 000 miles to a set I'm most likely going to go with Mickey T's or something similar for next time.