I have an 04 heritage reg.cab 4.6 and I have decided on a rancho 4in sus lift. Rancho says you can only fit a 33s. Im trying to decide what wheels, size tires if I can go 35s, and what would be the best back spacing? I will be getting some 4:10s put in also. I would apreciate any opinions. Thank you.

 

Back spacing would be 5.5 or close to that. Tire size is up to you, look around do you want 17s 0r 18s? If you went with a big 18 you may want 4.30 gears instead.

 

I want to go 17s. also how bad would gas be with 430s?

 

He has a heritage edition (same as the 97-03's). You want a wheel with 4 1/2 inches of backspacing, like the OEM wheels. Yes, you can fit 35's with the Rancho lift. Personally, I'd suggest going with the 5 inch RCD or 6 inch Fabtech lifts with 35's and 4.56 gears since you have a 4.6 engine.