I just got an 05 F250 crew diesel fx4 with 17" wheels. I am going to lift it a little, possibly a leveling kit, or a 3 inch kit, but will buy a 4 inch if I can find one I like. I already bought a set of Weld EVO Velocity 8s in 20x9.5, and if I measured correctly they have 5 inch backspacing(measured from mounting flange to rear of rim). I plan to run 35x12.50s,, possibly 37x13.50s if they would fit, but am getting comcerned about my backspacing since I read here that the newer SDs have different spacing. Will my combo work, and what does everyone suggest,, Im not going to be able to spend a ton of money, and I need it functional, so I dont want to lift more than 4 inches. Im looking at Toyo mts, Kumho mts, Swamper m16s, and Mud Grapplers. Which tire would everyone recommend? Will my wheels work? Is it worth the extra money to buy a 3 or 4 inch lift when I can buy a leveling kit for less than $200? Thanks for your advice.