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skidoo1066

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I became the proud owner of a '21 XLT 3.5 EB a few weeks ago, and the Wife gave me permission to lift it so... I did.

I had a local shop install this Zone 4" lift. Zone brand Nitro shocks on the back and replaced front shocks with Bilstein 4600s. Full lift setup, but instead of replacing the struts it extends them so you can use the original strut.

37x12.50r18 Falken Wildpeak RTs on 18x9 0 offset wheels.

The mechanic at the shop was really worried about how much he'd have to cut to accommodate for suspension travel after he got the tires on and they were nearly rubbing everywhere, but luckily just getting rid of all the plastic, trimming the front bumper (after removing front crash bar), a little cutting here and there that I haven't been able to see, and cranking caster forward seems to have gotten there. I haven't taken it up the trails yet, I've bumped over some curbs and so far so good, haven't seen any rubbing. Will report back after the snow starts melting and I can take it up some mountain roads.

Stiff tires gives a rougher ride, used to ride like a Porsche and now it rides like a truck. Fuel economy is down from 22 to about 18mpg highway, which I'm not even sad about tbh. Noticeably less get-up-and-go, but let's be honest, it still has a lot more go than a stock Tundra 5.7. Braking feels like a much bigger difference, to the point that I worry about it a bit. I start slowing down long before I get to a stop sign or red light. I might get a tune at some point in the future, but I definitely think I'll upgrade my front brakes first.

Would I do it again? Jury still out, but probably. This is not my daily driver, I use it a few times a week. If it were my daily driver I'd only go 34-35 tires. But for an adventure vehicle, it's pretty great. I used to have a 2008 Titan Pro4x with no lift and stock sized 33.5", and this F150 with 37s still has more power, rides about the same, and is a much nicer truck overall.

Just thought I'd share, and inspire you if you're thinking about it.

Ford F-150 4 inch lift + 37s = Awesome (21 XLT) 1000002432
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mxwrk

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Looks great. I love a big tire and a 18 or smaller wheel combo!
 

Zedbra

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I can only image the trimming you must have had to do - I run 35" tires with a 6" lift and the grinder needed a few discs to get things out of the way. The 37"s look alright there - how is articulation?
 
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skidoo1066

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I can only image the trimming you must have had to do - I run 35" tires with a 6" lift and the grinder needed a few discs to get things out of the way. The 37"s look alright there - how is articulation?
The trimming was less than you'd think. The 0 offset wheels and 12.5" wide tires rather than 13.5 made an enormous difference. The caster is also surprisingly far forward which made it so most of the needed space came from just chopping the front bumper, I didn't know the F150 could get it that far, but it still drives fine so I won't complain. I'll get some pics up of the trimmed areas, and find something big to drive up on for articulation pics too.
 

fordhouston

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37’s for a 4 inch lift kit is way TOO big. you can trim and cut as much as you want sure, but you’re sacrificing the aesthetics and structural integrity of a vehicle. just my 2 cents.
 

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Chili

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One thing as certain as death and taxes - People love minimizing the fuel economy effect on their truck mods :).

Usually goes like this: level - lift - big tire - bigger tire - random suspension mods to try and fix the ride - For Sale.
 

Aonarch

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Less offset would mean less cutting and better fitment.

To each their own, a big spacer lift is going to perform quite poor in the real world. Drivetrain geometry goes to shit as well. You start running into premature wear, noises, and vibrations.
 
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skidoo1066

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Less offset would mean less cutting and better fitment.

To each their own, a big spacer lift is going to perform quite poor in the real world. Drivetrain geometry goes to shit as well. You start running into premature wear, noises, and vibrations.
From what I've seen 0 to +15 offset is about optimal for best fitment

It's not just a 4" spacer, it's a full lift, but rather than replacing the struts it extends the struts. https://zoneoffroad.com/products/4-inch-lift-kit-ford-f150-21-24-4wd?variant=42278467600472
 

Aonarch

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From what I've seen 0 to +15 offset is about optimal for best fitment

It's not just a 4" spacer, it's a full lift, but rather than replacing the struts it extends the struts. https://zoneoffroad.com/products/4-inch-lift-kit-ford-f150-21-24-4wd?variant=42278467600472
Same thing applies. You are bolting on a ton of "corrective" parts to try and retain stock geometry.

The lower/ more negative the wheel offset the higher the king pin angle and scrub radius is, this is a bad thing.

If going slightly taller or wider you can increase negative offset by millimeters, not inches.

The proper way to do this on IFS is a long travel kit or portals.
 

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honda250xtitan

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ah, fellow ex pro4x owner checking in. RIP
 

2515050

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Awesome looking truck! I've always been a fan of big tires on minimal lift and the smallest wheels you can get to fit over the brakes/knuckle. Looking forward to seeing some more pictures.
 

Hamps

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Looks good.
Stock gears? Shift points carry over pretty decent?
With 3.73s and 33s I'm at 2000rpm at 80 5L
34.5" is what I plan on going to after leveling and should turn around 1850 - 1900rpm. 2200rpm towing in 8th at 70.
Truck is new and averaging a tick below 19mpg by notepad. I'm curious to see what the 3.5 will like gearing wise. Little load never hurt turbochargers. Also wonder about trans Temps.
Pretty cool keep us updated.
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