37” spare tire - list of tires that fit under the bed

[Coyotesong]

37" Nitto Ridge Grappler on 17x8.5 Method 701 did not fit for me. Aired down to 18psi and still no go. Not enough room between hitch and trackbar. The hitch seems to protrude into the spare tire area quite a bit.

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[Deleted member 30519]

This is a stupid question but does putting a heavy spare put a lot more strain on the coils? I don't really need the spare underneath and I like the extra lift I have in the rear. I have a really huge 35 Duratrac with heavy Moto Metal rims.

 

[Linx]

37" Nitto Ridge Grappler on 17x8.5 Method 701 did not fit for me. Aired down to 18psi and still no go. Not enough room between hitch and trackbar. The hitch seems to protrude into the spare tire area quite a bit.

How do you like the ridge grapplers? What did you end up doing for a spare?

 

[Xzibbit]

37 x 12.50 Nitto Ridge Grapplers fit with less than 1/8" to spare.
KMC XD Brute 17" rim.

 

[Andtros]

Stupid question- is there a skid plate or anything protecting the tire in the area of the spare? I wonder because it seems that many of those tires are like three-ply sidewalls if I remember correctly. It appears that if you drag your rear- you might be pulling your tire. With such a long wheelbase vehicle, I would image something to prevent poping of the tire offroad on rocks.

Maybe I'm just overthinking.

 

[WhatExit?]

37 x 12.50 Nitto Ridge Grapplers fit with less than 1/8" to spare.
KMC XD Brute 17" rim.

What is the wheel's offset?

One issue I wonder about is the wheel's offset or backspacing and if/how that affects the tire fitting since I haven't gotten under the Gladiator to try fitting one of my 4 tires (would obviously have to remove a wheel/tire and manhandle it under the truck and try lifting it up to fit, etc.).

Would be helpful to know about the wheels' offset and if that is a factor?

 

[bastage]

I dont think the offset would have anything to do with the spare fitting. The wheel width however would as it would change the change the bulge of the tire.

 

[Jdschell]

Just had 5x Maxxis Razr MT's mounted on my Sport S without lift (for now). 37x12.5R17 spare fits

My Razr spare does not fit fully. I have it shoved up there best it will go.

 

[GrayGoose]

How big of a spare tire will fit in the factory mounting on the gladiator - I'm running 37's and have factory spare lol

 

[WhatExit?]

https://www.jeepgladiatorforum.com/forum/threads/37”-spare-tire-list-of-tires-that-fit.24091/

 

[GrayGoose]

https://www.jeepgladiatorforum.com/forum/threads/37”-spare-tire-list-of-tires-that-fit.24091/

I appreciate that link

 

[WhatExit?]

https://www.jeepgladiatorforum.com/forum/threads/37”-spare-tire-list-of-tires-that-fit.24091/

 

[WhatExit?]

Anyone tried the General Grabber A/TX 37x12.5/R17 size? I was thinking of going that route but now wondering if the Milestars are going to be better for fitment...

It was reported previously that the General Grabber X3 will not fit. It should in a post in this thread

 

[WhatExit?]

Houston, we have a problem - looks like same tires do and don't fit???

37" Nitto Ridge Grappler on 17x8.5 Method 701 did not fit for me. Aired down to 18psi and still no go. Not enough room between hitch and trackbar. The hitch seems to protrude into the spare tire area quite a bit.

37 x 12.50 Nitto Ridge Grapplers fit with less than 1/8" to spare.
KMC XD Brute 17" rim.

 

[WhatExit?]

Updated list of 37’s that Fit

• BFG A/T KO2 36.5" diameter x 12.5" wide
• Maxxis Razr MT 36.8" diameter x 13.1" wide (17x9.5" wheel)
• Cooper Discoverer STT Pro 36.77 x 13.0" wide
• BFG T/A KM2 MT 36.8" x 12.5" wide
• Kanati Trail Hog MT 36.7" x ? (didn't find width online)
• Milestar Patagonia 36.8" x 12.50" wide on AEV Borah 17 x 8.5 wheel
• Nitto Trail Grappler 36.85" x 13.43" wide – “very tight but it fits”
  
  • https://www.jeepgladiatorforum.com/forum/threads/37”-spare-tire-list-of-tires-that-fit.24091/post-480741
• Gladiator Xcomp M/T 37x13.50-17 (well-used tire) on an 8.5” KMC wheel (removed resonator and heat shield too)
  
  • https://www.jeepgladiatorforum.com/forum/threads/37”-spare-tire-list-of-tires-that-fit.24091/post-483530
• Achilles Desert Hawk XMT 37x12.5x17– “fits barely – had to pull the heat shield and pull it against the receiver while cranking it into place
  
  • https://www.jeepgladiatorforum.com/forum/threads/37”-spare-tire-list-of-tires-that-fit.24091/post-494970
• Patagonia 37x12.5-17 on Method 701 wheel – fits with 35 psi wit a little wigglng – about ¼” from rear trackbar
  
  • https://www.jeepgladiatorforum.com/forum/threads/37”-spare-tire-list-of-tires-that-fit.24091/post-499676
• Falken Wildpeak AT3W 37x12.50-17 fits but Gladiator does NOT have two hitch receiver
  
  • https://www.jeepgladiatorforum.com/forum/threads/37”-spare-tire-list-of-tires-that-fit.24091/post-515819
• Nitto Ridge Grappler 37.12.50-17 see below "doesn't fit" on KMC XD Brute 17” wheel – fits with less than 1/8”
  
  • https://www.jeepgladiatorforum.com/forum/threads/37”-spare-tire-list-of-tires-that-fit.24091/post-543306

37’s that Don’t Fit

• General Grabber X3 36.8" x 12.5"
• Goodyear Wrangler MT/R Kevlar 36.8" x 12.5" wide - Aired down to 0 psi with or without the heat shield, it firmly hits the hitch and trackbar
• Toyo Open Country R/T 36.8" x 12.5" wide
• 37" Nitto Ridge Grappler on 17x8.5 Method 701 did not fit for me. Aired down to 18psi and still no go. Not enough room between hitch and trackbar. The hitch seems to protrude into the spare tire area quite a bit.
  • https://www.jeepgladiatorforum.com/forum/threads/37”-spare-tire-list-of-tires-that-fit.24091/post-530389

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