Does anybody have the 4x4 CST 7" lift with 37's tires or does anybody know if they will fit? I am looking at trying to fit 37x13.50x20 with a 4.5 inch backspace on the wheels. Also I am sure this has been asked before but the wheels I really like have a 5.5 inch backspace, but CST says to run a 5 inch. I know I won't have a problem with the 4.5. The wheels will just stick out a little more, but how about the 5.5? Will they clear the spindle and everything else in there or should I just stick with my second choice and go with the 4.5 backspace? Thanks in advance.

Wow, sounds like you're putting together a beast. I'm not sure about your situation, but good luck with your project. These Titans look great raised. I'm pretty sure Big Foot needs to invest stock in the Titan!!!!

Yeah I was trying to go with 37's but I have been doing the research and I don't think the 37's will fit especially with the 4.5 inch back space. So I am going to get the Nitto Terra Grappler's 325/60/20 which about a 35.1 inch. Hopefully when I get my taxes back I will be able to get the lift and wheels/tires.

Most 35's will fit without rubbing...

37's, though, would probably rub with that backspace.

Most people here, I believe run 35's with their 7" lifts.

From what I have read.... In order to utilize a 7" lift with 37" tall tires you will need to get the 3" body lift. Otherwise your rubbing.
Keep a look out, I am putting my lift on this weekend and then next weekend I should have my body lift and tires for 10" total lift.