37” tire suspension help

[Alford78]

Hello all. New owner here and have been reading the forum over the past week and after searching for the best way to run 37s I’m just as confused as I was after the first day of searching on here.

My truck will be used 80% on road and 20% on mild trails with some swamp/mud holes. No sand within thousand miles but do like the look of prerunner mods. I’ll be going with a relocated IC and a good CAI for sure. Will add a catch can and AEM ****/water kit along with injectors if needed but hope to eventually have a flex fuel system. Will also go with some down pipes and adapters if need be. Leaning heavily towards cut front bumper and nice rear bumper topped off with COBB tune once they roll it out. So I think I’ve got all the power and appearance mods covered other than the best way to fit 37s without cutting liners/welds etc....

What is the best way to fit 37s on our trucks without throwing a ton of money into the setup? I don’t mind heating the fender liners and massaging them a little but don’t really want to cut anything that will make it nasty looking like I’ve done in the past on my previous trucks. This truck is just too nice to hack up IMO.

I’ve read about custom fender liners but I don’t have any knowledge at all about how they work, are fitted, applied, etc.. So I guess that could be an option I’m just not familiar with which would allow more cutting than I’m thinking...I just don’t know so any links would be great if that is a needed option.

I’ve read that deavers are a most no matter what so they are on the list along with a king 2.5” bump mounted to the SVC ABS bumpkit for flexibility. Giesers are also mentioned a lot but just seems like they don’t raise it enough.

So that’s where I’m stuck. So many different opinions and setups with different offset wheels jumble up my search results. I honestly like both factory wheels as long as they are black which powder coating can take care of easily enough but if need a different offset that is fine as long as I know which offset to get.

So please help a first Raptor owner out in understanding how to get 37s on the proper way if possible?!? If have to go with fenders and bedsides I would use carbon for sure but would need to know for sure they are a proper fit unlike cheap glass sets. I just don’t know anyone where I live that I trust with glass since I’ve only lived here a few years (Southwestern KY about equal distance to Nashville TN, Louisville KY, Memphis TN).

Thanks all!
Alex

 

[Alford78]

Test pic

 

[Jake17]

What's the best way to fit 37's without throwin' a ton a money into the $etup?

fire up yer grinder & head for the mall

 

[TXRaptor]

First off, ignore anything Jake17 posts as he is a little off...

There are lots of threads explaining what need to be done to run 37s, but the trimming depends on the wheels/tires you choose. I am running 37x12.5 Toyo RTs with 17x8.5" Fuel Trophys that have +6 offset. Factory wheels are the same width with +34 offset, so mine stick out about an inch further. (The lower the offset, the more they stick out on the same width rim)

Geisers will raise your truck higher than level in front to about 2.5" to 3". I did not want mine to sit higher in the front, so I went with Deaver +3s in the back. Deaver +2s are factory height because you remove the 2" block under the leafs when installing. Deaver +3s are 1" higher than factory.

The amount of trimming you will have to do is based on the final tire height and wheel width/offset you choose. Some 37s are bigger than others or have more aggressive tread designs, etc. I had to trim a 1-2" square of the plastic fender inner liner on both sides to avoid rubbing at full lock with the Geisers.

I have a 3/4" back to front rake, which I think is the perfect stance.

 

[cao0215]

First off, ignore anything Jake17 posts as he is a little off...

There are lots of threads explaining what need to be done to run 37s, but the trimming depends on the wheels/tires you choose. I am running 37x12.5 Toyo RTs with 17x8.5" Fuel Trophys that have +6 offset. Factory wheels are the same width with +34 offset, so mine stick out about an inch further. (The lower the offset, the more they stick out on the same width rim)

Geisers will raise your truck higher than level in front to about 2.5" to 3". I did not want mine to sit higher in the front, so I went with Deaver +3s in the back. Deaver +2s are factory height because you remove the 2" block under the leafs when installing. Deaver +3s are 1" higher than factory.

The amount of trimming you will have to do is based on the final tire height and wheel width/offset you choose. Some 37s are bigger than others or have more aggressive tread designs, etc. I had to trim a 1-2" square of the plastic fender inner liner on both sides to avoid rubbing at full lock with the Geisers.

I have a 3/4" back to front rake, which I think is the perfect stance.

So i m with ford beadlock wheels, use same as yours 37*12.5*17? i m looking the same tire as yours, and need trim some when i m doing on mine? Also, wats the MPT NGAUGE change for custom tire about Axle ratio and tire height?

 

[Jake17]

trimmed both fender liners

full lock @Starbucks #NOrub

 

[TXRaptor]

full lock @Starbucks #NOrub

Thank you!! I would expect no less from you...

 

[Alford78]

First off, ignore anything Jake17 posts as he is a little off...

There are lots of threads explaining what need to be done to run 37s, but the trimming depends on the wheels/tires you choose. I am running 37x12.5 Toyo RTs with 17x8.5" Fuel Trophys that have +6 offset. Factory wheels are the same width with +34 offset, so mine stick out about an inch further. (The lower the offset, the more they stick out on the same width rim)

Geisers will raise your truck higher than level in front to about 2.5" to 3". I did not want mine to sit higher in the front, so I went with Deaver +3s in the back. Deaver +2s are factory height because you remove the 2" block under the leafs when installing. Deaver +3s are 1" higher than factory.

The amount of trimming you will have to do is based on the final tire height and wheel width/offset you choose. Some 37s are bigger than others or have more aggressive tread designs, etc. I had to trim a 1-2" square of the plastic fender inner liner on both sides to avoid rubbing at full lock with the Geisers.

I have a 3/4" back to front rake, which I think is the perfect stance.

Yea I love the way your truck looks. I’ve read your thread.

Can you take a pic of what you’ve trimmed please? And that small of trimming will still allow you to be fine off road with compression?

I just want to do this right the first time and don’t see any others getting a higher stance by using other products than the Geisers or perches. Is there any other way to get more clearance? Like with a different shock or spring?

Bests
Alex

 

[Alford78]

Will adding the RPG Adjustable Perch Collar 3.5” max height with Geisers provide a higher front end? Is this an option?

Bests
Alex

 

[xrocket21]

Will adding the RPG Adjustable Perch Collar 3.5” max height with Geisers provide a higher front end? Is this an option?

Bests
Alex

that's gonna be tooooo much lift Im thinkin. That would be like 6.5" of additional preload..... You would have jack squat for droop travel as well

 

[TXRaptor]

Will adding the RPG Adjustable Perch Collar 3.5” max height with Geisers provide a higher front end? Is this an option?

Bests
Alex

You will be way past the operating range of the front shocks if you try to stack a perch collar on top of the Geisers. Most people do one or the other based on their budget and how they want their truck to ride.

The adjustable perch collars are the least expensive option. However, at their maximum setting the front end will be stiff and bouncy, as reported by many who have tried. The factory shocks remain in their operating range.

The Giesers progressive springs are next on the cost spectrum and they provide a slightly firmer ride, but in a good "truck feels planted" kind of way. They ride smooth under normal driving conditions, but because they become stiffer as they come under full compression, they perform very well off-road. The factory shocks remain in their operating range.

The most expensive option is to replace the front end suspension components and shocks with Fox/King/ICON replacement parts which all have adjustable height settings. This type of setup is big dollars $$$.

 

[Alford78]

You will be way past the operating range of the front shocks if you try to stack a perch collar on top of the Geisers. Most people do one or the other based on their budget and how they want their truck to ride.

The adjustable perch collars are the least expensive option. However, at their maximum setting the front end will be stiff and bouncy, as reported by many who have tried. The factory shocks remain in their operating range.

The Giesers progressive springs are next on the cost spectrum and they provide a slightly firmer ride, but in a good "truck feels planted" kind of way. They ride smooth under normal driving conditions, but because they become stiffer as they come under full compression, they perform very well off-road. The factory shocks remain in their operating range.

The most expensive option is to replace the front end suspension components and shocks with Fox/King/ICON replacement parts which all have adjustable height settings. This type of setup is big dollars $$$.

I’ve looked at the Fox Shocks and didn’t realize they would actually lift the truck. I did notice the Kings were able to but didn’t know if they would be able to raise it more than the Geisers. How do I figure out how much the shocks can lift the truck compared to stock? That is an option I’m not against as long as I don’t need to change “all” the othe components? Carbon fenders and bedsides would look better and be cheaper than replacing all the other hardware to make the upgraded shocks work.

---------- Post added at 09:20 PM ---------- Previous post was at 09:10 PM ----------

that's gonna be tooooo much lift Im thinkin. That would be like 6.5" of additional preload..... You would have jack squat for droop travel as well

Yea I didn’t mean use the entire 3.5” just that it was able to go that high. Was just trying to get 37s to fit without trimming.

Upgraded shocks or carbon fenders and bedsides are my only other options from what I’m searching and would rather not spend a fortune on hardware other than actual shocks so I’m now searching how much hardware needs to be upgraded to go with upgraded shocks. And how to figure out how much higher the shocks will allow the truck to sit compared to stock?

Bests
Alex

And many thanks to all!

 

[trophycummins]

I’ve looked at the Fox Shocks and didn’t realize they would actually lift the truck. I did notice the Kings were able to but didn’t know if they would be able to raise it more than the Geisers. How do I figure out how much the shocks can lift the truck compared to stock? That is an option I’m not against as long as I don’t need to change “all” the othe components? Carbon fenders and bedsides would look better and be cheaper than replacing all the other hardware to make the upgraded shocks work.

---------- Post added at 09:20 PM ---------- Previous post was at 09:10 PM ----------



Yea I didn’t mean use the entire 3.5” just that it was able to go that high. Was just trying to get 37s to fit without trimming.

Upgraded shocks or carbon fenders and bedsides are my only other options from what I’m searching and would rather not spend a fortune on hardware other than actual shocks so I’m now searching how much hardware needs to be upgraded to go with upgraded shocks. And how to figure out how much higher the shocks will allow the truck to sit compared to stock?

Bests
Alex

And many thanks to all!

We've done a customers truck with the king OE replacements, at the factory out of the box setting they were providing 4" of lift over stock. We had to lower it quite a bit to match the +3 deavers.

 

[RaptorFlipper]

Picking mine up tomorrow. Geisers at 1 and 3/4 in the front, some medium trimming, and nothing in the back. Keep you posted. My mechanic and tire guy say i am good. Add honey badger bumpers on front and back.

 

[TXRaptor]

Picking mine up tomorrow. Geisers at 1 and 3/4 in the front, some medium trimming, and nothing in the back. Keep you posted. My mechanic and tire guy say i am good. Add honey badger bumpers on front and back.

You only saw a 1 3/4" difference after your Geiser springs?

Is your front sitting higher than the factory rear?

 

[RaptorFlipper]

Just going off what he is telling me. Picking up tomorrow night. Full report to come.

 

[Alford78]

We've done a customers truck with the king OE replacements, at the factory out of the box setting they were providing 4" of lift over stock. We had to lower it quite a bit to match the +3 deavers.

So I can just get the front and rear Kings 3.0 and deavers and that will fit 37s? What about spindles, control arms, and other hardware? Will they work set higher than stock just fine so I can upgrade hardware at a later time or will I need to replace some hardware?

Thanks for the input!

Bests
Alex

 

[trophycummins]

You can run them with stock arms. I’d recommend doing the upper control arms and alignment cams, however.


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[Clockton]

So I can just get the front and rear Kings 3.0 and deavers and that will fit 37s? What about spindles, control arms, and other hardware? Will they work set higher than stock just fine so I can upgrade hardware at a later time or will I need to replace some hardware?

Thanks for the input!

Bests
Alex

I have Kings, Rouge HEIM UCAs, 37 KO2s and Deavers and am very happy with the setup. Its a great first step and you don't need anything else to pound away in the desert. Call SVC and let them help. They are great

 

[Nimrod]

I have Geiser front springs and Deaver plus 2 rear springs which is the same as stock Height in the back with Method 17” rims and 37” BFG tires. I have zero rubbing on my gen 2 and the rear sits a very tiny bit lower. It’s very hard to notice unless you’re really looking for it.