Well I did find one truck on here that had the 6" RCD lift with his factory 17x7.5's, they were not FX4, but he had 285 70 17. And I'll have to admit his truck looked good. I'll see if I can find a picture. But in one thread he said his back spacing was 4.5 with those factory wheels and that's the maximum for that RCD lift. That must mean my backspace is 4.5 too. And I think what you are talking about is back spacing between 5-6.

 

Here is the link to this guys truck:

https://www.f150online.com/forums/me...ure1668-a.html

https://www.f150online.com/forums/me...=gnr-img-album

 

Nah, more backspacing is generally better for lifts so that the wheels and tires get pushed out more and away from everything. So 4.5 would be the minimum in that case. Offset and backspacing go together, with the relationship depending on wheel width. But too much backspacing and it'll rub on other components.

So is his truck too wide of a track for you? Looks pretty tucked to me. I recognize his truck and it looks good!

 

He's talking about the track width in the front being wider than the rear caused by the lift spindles, it makes the front 1.5" wider per side, where the rear stays stock width.

And 4.5" of backspacing would be the maximum allowed. A higher backspacing would most likely not even allow the wheel to turn without hitting something solid. The higher the backspacing is, the more tucked in the wheel is. The lower the number, the more pushed out.

For a custom lift, you'd need to find an offroad shop that specializes in something like that, and you'd probably have to leave your truck there so they can build a one off lift. But price wise, probably not gonna be close to the same range as the 6" lifts your looking at. Only other option I can think of, which I normally don't recommend, is to get a set of high quality wheel spacers made to put in the rear to even out the track width. Just have to make sure you regularly check them and what not.

 

yeah other than the custom lift, the wheel spacers where an option. I found a company that makes custom ones to exactly what you want. bolt patter, space width, list goes on. I made some on there to see how much they would cost and it was almost 500 bucks. That's crazy for 1.5." The second option I had, was what I asked you, pizzaman, about a while back. (I had to make a new profile because my original that I merged with facebook wont let me in). But that was using my 2" coil spacer on top of a 3" coil spring. That would be 5" up front. I'd also get the aftermarket uca and alignment kit plus some longer shocks. i'd be able to fit 305 70 17 (34x12)

 

and if I needed a longer brake hose that goes from the frame to the caliper, i'd get some steel ones about 3" longer. but the only ones I can find on the internet are lines made for the 4wd truck. will the 4wd lines fit the 2wd? unless you think the factory ones will be ok.

 

Ohhh was wondering why he cared if it was wider.

But oops, I'm sorry! Don't listen to me then I get both offset and backspacing backwards/reverse every once in a while. How do those factory wheels not tuck inside way too much and have like 5.5" like others? I knew stock wheels usually tuck inside too much, so I wasn't being completely stupid. I didn't think any of them had a backspacing that low (think I got it right now . . . )