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It’s my first post and hopefully it will be helpful for anyone who may be wondering if a 38 will fit in the stock location.

as for the specifics, I do have a Clayton off-road rear track bar, and my tires are Toyo RT Pro 38x11.5 x 17”.

It’s a snug fit but not to bad, it’s actually easy to raise the tire into the seated position but you will have to guide the tire a bit so you have clearance from the track bar and exhaust etc.

1-I removed all of the air form the tire. It may have 1 or 2 ft/lbs left in it at most.
2-Secondly, I used a sawzall and my angle grinder to trim off 1/8” of the 2” receiver that protrudes into the spare tire area. Don’t cut off the factory weld, just kiss it with the blade. See pics for clarification.
3-Removed the heat shield. I am fully deleted so my exhaust is likely cooler at the tip than those who aren’t. If you’re concerned about heat, wrap some insulation around your pipe. I’m personally not concerned.


Jeep Gladiator 38” Spare Tire does fit in stock underbody location (how-to with photos)! IMG_2190
Jeep Gladiator 38” Spare Tire does fit in stock underbody location (how-to with photos)! IMG_2191
Jeep Gladiator 38” Spare Tire does fit in stock underbody location (how-to with photos)! IMG_2189
Jeep Gladiator 38” Spare Tire does fit in stock underbody location (how-to with photos)! IMG_2188
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krweatherl

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Nicely done. Thanks for posting
 

CrazyCooter

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I'd wrap that close section of tailpipe........I cooked my 38" spare on one knob while towing.
 

CrazyCooter

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What about pics of your truck with the eleven-fiddys on there? Same tire that I want next time.

Had a Gladiator pass by on the highway a couple weeks back on some tall skinny (assuming 38x11.50s) and his tires looked super narrow!
 
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Jteakus

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Jeep looks killer on the skinnies!
Reminds me of CJ's on TSL's in high school.

Are you leaving the spare deflated during storage?
 

Gman 2025

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I'd wrap that close section of tailpipe........I cooked my 38" spare on one knob while towing.
Yes that’s a great idea, from the picture it looks extremely close.
 

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Yeah, will have to, will also have to carry a small emergency 12v compressor on board.
They make those portable jumper packs that have an air pump built in. prob air it up in 2 passes though cause that's a lotta tire.

Looks fantastic and might make me wanna go 38's instead of 37s.
 

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It’s my first post and hopefully it will be helpful for anyone who may be wondering if a 38 will fit in the stock location.

as for the specifics, I do have a Clayton off-road rear track bar, and my tires are Toyo RT Pro 38x11.5 x 17”.

It’s a snug fit but not to bad, it’s actually easy to raise the tire into the seated position but you will have to guide the tire a bit so you have clearance from the track bar and exhaust etc.

1-I removed all of the air form the tire. It may have 1 or 2 ft/lbs left in it at most.
2-Secondly, I used a sawzall and my angle grinder to trim off 1/8” of the 2” receiver that protrudes into the spare tire area. Don’t cut off the factory weld, just kiss it with the blade. See pics for clarification.
3-Removed the heat shield. I am fully deleted so my exhaust is likely cooler at the tip than those who aren’t. If you’re concerned about heat, wrap some insulation around your pipe. I’m personally not concerned.


IMG_2190.webp
IMG_2191.webp
IMG_2189.webp
IMG_2188.webp
Wow!! Guess that Clayton bar does work, I couldn't even get my 37" Toyo M/T to fit when I ran them, Impressive you got a 38" tire in there. I'm running a Nitto 38x13.5/R17 now but have my spare on top of my bed rack.
 

Toytech01

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Im running the Nitto 38x11.50s with a MC rear track bar. No problem at all and still have the modified heat shield with the tire mostly full. I did take a flap disk tobthe hitch just for a bit of extra clearance. Stock exhaust for now....
Jeep Gladiator 38” Spare Tire does fit in stock underbody location (how-to with photos)! 1000004711
Jeep Gladiator 38” Spare Tire does fit in stock underbody location (how-to with photos)! 1000006343
 
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DirectHit

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I’ve got nitto 38x12.5/R17 with synergy track bar. No heatshield, wrapped exhaust and trimmed hitch. Could not get Clayton to work unfortunately.
 

md2k

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"He had has" and "Toytech" are you both running a 2-2.5" lift on those?
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