They are 305-70-16 so they end up being right under 12.5'' wide. I'm pretty sure its the readylift torsion keys. They were already on the truck when I got it but when I put these wheels and tires on I had to crank the keys a little more to get clearance. Also had to a do a little front bumper trim.
Hey, jus curious, how wide are those 33s on your 2500? Also, what leveling kit do you got?