General grabber all terrains 33 inch. They're great off road. The side wall says 65 psi. The fuel Jam says 65 in front 85 in back. I've read that that high of pressure causes uneven wear. They have 3000 miles on them. I don't want to run them any more until I figure this out. I've read 35 psi is good. But I don't know what to do.

F250 single cab 5.4 4.10 gears.

 

Give this a read perhaps it will help.
http://www.4wheelparts.com/tire-whee...e-checker.aspx

 

Just chalk test them