Overtrail Replacement Tires (1 Viewer)

Huntski

New member
Jul 29, 2025
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New Prague, MN
What are the Overtrail folks using for replacement tires? Same as factory or something else?
 

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Slightly noisier, but not a big problem for me. When I switched to K02s on my previous car, a Volvo XC70 they were much noisier than the street tires I had on that vehicle.
 
I stayed stock size and got Nitto Terra Grapplers 3 (I had Nitto Terra Grapplers on another vehicle and liked them) (link below). They are great on road and pretty good off (though not great in snow if that is your intention). I found data and reviews on Tirerack.com to be really good and useful.

 
I stayed stock size and got Nitto Terra Grapplers 3 (I had Nitto Terra Grapplers on another vehicle and liked them) (link below). They are great on road and pretty good off (though not great in snow if that is your intention). I found data and reviews on Tirerack.com to be really good and useful.

Thanks!
 
With the 2025 Overtrail factory 1 inch lift, the stock tires create a big space in the wheel well, especially with the back wheel wells.. From what I am able to figure out the 275/70 18 tires work on the stock rims and in the spare tire location. Quite a few seem to have upgraded to the 285/70 18 after adding a 1 inch lift to the 2024 Overtrail models but would those work with the stock rims which I understand to be 18x7.5 which is a little small for a 285/70 18 tire and would that 285/70 18 tire fit in the spare tire location?
 
I have the 285/70-18 AT4W on factory OT wheels. At 7.5” wide the factory wheels are right at the minimum approved wheel width (7.5” - 9.5” is the approved range for Falken). No rub. I chose to keep the factory 33” spare under my GX. While the AT4W might have fit in the space, it would have been ~1” lower under the truck due to the increased tire width. I need as much clearance as I can get/keep for when I’m hitting the trails with my son in his Tacoma.
 
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With the 2025 Overtrail factory 1 inch lift, the stock tires create a big space in the wheel well, especially with the back wheel wells.. From what I am able to figure out the 275/70 18 tires work on the stock rims and in the spare tire location. Quite a few seem to have upgraded to the 285/70 18 after adding a 1 inch lift to the 2024 Overtrail models but would those work with the stock rims which I understand to be 18x7.5 which is a little small for a 285/70 18 tire and would that 285/70 18 tire fit in the spare tire location?
285/70 will fit in spare loc. You can run a larger tire on the ‘25s bc of the lift. 285/75 here
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incognito.gx - are you saying you installed a slightly larger tire size (285 70/18) on the factory setup? Or did you install them after you had an aftermarket 1" lift?
 
incognito.gx - are you saying you installed a slightly larger tire size (285 70/18) on the factory setup? Or did you install them after you had an aftermarket 1" lift?
I haven’t personally done it yet, but after some research I’ve found that 285/70 is the largest tire (on stock wheels) you can fit underneath. Also no rub on 2024 OT/OT+
 
Hopefully my plan and excruciating detail is helpful to some of you, especially regarding the spare:

Like most, I want to keep the spare underneath for the time being. I also want to upgrade the main 4 tires to a “shy 34” size, 285/70-18, some of those brands being a stated nominal 33.6 or 33.7. I also don’t want the heaviest tire, but I do want an E rated tire for extra towing safety - for load, very hot summer temps, and improved lateral stability.
I also want the ability and confidence to air down a bit and have reasonably strong enough sidewalls for off roading.
So for the main 4 I’m going to try the Toyo A/T III, E load, 33.7”, stated 56 lbs, section width 11.5. I hope they are not too loud or annoying at interstate speeds..

The issue becomes the spare.

I recently installed the ARB/OME MT64 kit on my ‘24 OT. I’ve gained at least 2.25 or 2.5” clearance depending on where, how you measure (we left a small amount of rake to accommodate loads, towing etc). I don’t want to lose any of that new clearance compared to my current spare, a 275/70-18, 33.2, stated section width 11”.
After measuring before and after the lift, I’ve gained the 2.25 to 2.5” right at the thickest (section width) forward portion of the current spare just behind the diff. Prior to the lift the spare was maybe, barely a half-inch taller than the diff. Now, after good measurements, the current spare is at 12” and the diff sits at 9” to the ground. (On the back side of the spare behind the hitch receiver opening..I now have 17” of clearance, which I’m comfortable with).

So I looked around for a new ‘tall enough’ 275/70-18, with a similar low section width to my current spare, so I can keep the new clearance.
That led me to the Cooper Discovery Rugged Trek 275/70-18, load E, stated 33.7” (both mfr website and Tire Rack), stated section width 11.1”.
I’ve ordered one in, and will be able to try the spare fit very soon. I’ll try and measure it both before and after mounting it onto the OEM OT wheel. If the specs are pretty accurate…then it appears it will fit (after inspecting underneath the spare again..); giving me the 33.7” to match the 4 new Toyos, and a 11.1” section width to basically match my current spare. And hopefully retaining the new clearance.

These post-lift attached pics have really bad camera distortion. The actual numbers are as stated above.

UPDATE, 8-20-25:
I just tried out the new Cooper E rated spare tire this morning. It fits like a charm, just barely 😅. 34psi, mounted on the OT OE wheel.

I measured again with it mounted up in the spare location, and I’ve retained the same current clearance: 12” at front thickest portion (just behind the diff), and over 17” at the rear (just in front of the hitch receiver opening). And the mounted inflated diameter appears to be within .1 or .2 of the websites numbers. Yay!
So I went ahead and ordered the 4 Toyo 285/70R18 mains and wheels. ETA is mid next week. Will see how well those fit. 🤞

I’m attaching a few pics of the new spare.
 

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Hopefully my plan and excruciating detail is helpful to some of you, especially regarding the spare:

Like most, I want to keep the spare underneath for the time being. I also want to upgrade the main 4 tires to a “shy 34” size, 285/70-18, some of those brands being a stated nominal 33.6 or 33.7. I also don’t want the heaviest tire, but I do want an E rated tire for extra towing safety - for load, very hot summer temps, and improved lateral stability.
I also want the ability and confidence to air down a bit and have reasonably strong enough sidewalls for off roading.
So for the main 4 I’m going to try the Toyo A/T III, E load, 33.7”, stated 56 lbs, section width 11.5. I hope they are not too loud or annoying at interstate speeds..

The issue becomes the spare.

I recently installed the ARB/OME MT64 kit on my ‘24 OT. I’ve gained at least 2.25 or 2.5” clearance depending on where, how you measure (we left a small amount of rake to accommodate loads, towing etc). I don’t want to lose any of that new clearance compared to my current spare, a 275/70-18, 33.2, stated section width 11”.
After measuring before and after the lift, I’ve gained the 2.25 to 2.5” right at the thickest (section width) forward portion of the current spare just behind the diff. Prior to the lift the spare was maybe, barely a half-inch taller than the diff. Now, after good measurements, the current spare is at 12” and the diff sits at 9” to the ground. (On the back side of the spare behind the hitch receiver opening..I now have 17” of clearance, which I’m comfortable with).

So I looked around for a new ‘tall enough’ 275/70-18, with a similar low section width to my current spare, so I can keep the new clearance.
That led me to the Cooper Discovery Rugged Trek 275/70-18, load E, stated 33.7” (both mfr website and Tire Rack), stated section width 11.1”.
I’ve ordered one in, and will be able to try the spare fit very soon. I’ll try and measure it both before and after mounting it onto the OEM OT wheel. If the specs are pretty accurate…then it appears it will fit (after inspecting underneath the spare again..); giving me the 33.7” to match the 4 new Toyos, and a 11.1” section width to basically match my current spare. And hopefully retaining the new clearance.

These post-lift attached pics have really bad camera distortion. The actual numbers are as stated above.

UPDATE, 8-20-25:
I just tried out the new Cooper E rated spare tire this morning. It fits like a charm, just barely 😅. 34psi, mounted on the OT OE wheel.

I measured again with it mounted up in the spare location, and I’ve retained the same current clearance: 12” at front thickest portion (just behind the diff), and over 17” at the rear (just in front of the hitch receiver opening). And the mounted inflated diameter appears to be within .1 or .2 of the websites numbers. Yay!
So I went ahead and ordered the 4 Toyo 285/70R18 mains and wheels. ETA is mid next week. Will see how well those fit. 🤞

I’m attaching a few pics of the new spare.
Any update? Would love to see this.
 
I’m running B.F. Goodrich KO3s in the original OEM size of LT265/70R18/E 124/121S RWL. I ran these on my 2024 Land Cruiser First Edition and am running them on my 2025 GX550 Overtrail+. Durability is fantastic, winter performance is very good, highway noise is surprisingly low for an E load range tire, and I’ve been averaging approximately 19.5mpg in my first 1200 miles of mixed city/highway driving. For whatever it’s worth I’m running the KO3s at approximately 45psi cold pressure.
 
Any update? Would love to see this.
Yes FM3, everything has worked out extremely well for me.

As I described above I’m using a spare (Cooper Discoverer RT 275/70R18, E rated, 33.7”, section width 11.1”) mounted on the Overtrail OE wheel. It fits perfect in the spare location very snugly, it is no thicker than what I used there previously - I have not lost any of my new found lift clearance in that area - and it matches the diameter of the 4 new main tires, the Toyo 285/70-R18 E rated AT3s, which are also 33.6 or 33.7 diameter. (the Toyo being a ‘shy’ 34” tire)
I do carry 6 of the OE lug nuts to accommodate mounting the spare if needed, and an adapter to remove the new lug nuts on my aftermarket wheels. Along with a long torque wrench, and another long wrench.

The new tires (AT3s) on the new wheels (OZ Rally Desert 18x8 +25) with the new lift kit just barely fit without rubbing, no trimming of anything necessary. I wanted to stay with an 18” wheel, I wanted a small amount of poke (track increase for additional towing lateral stability) and Slee Offroad (who installed my ARB/OME MT64 lift) recommended an offset of 25.

The new wheels, which I really like, simply will not be desirable for most people as they are relatively heavy…and I don’t believe they come in lighter 17” sizes. The quality seems quite high, and I really like the look. I originally looked at various forged like Rays, I looked at Icons, etc. I stumbled across the OZs and now enjoy the very thin outer ribbon of silver visually separating the rest of the wheel from the black tire wall. It works well with the Incognito color IMO. They look way, way better in person than in pictures. The new Toyos are lighter than most other same size choices..so that helps a bit I guess. The TPMS all transferred without issue.

I ordered some metal hub rings from NYTOP and they are really nice; my best measurements with the micrometer showed them perfect.
I just had them installed at Les Schwab today for free (easy to do yourself though). They fit perfect onto the GX 95.1 hub. And we double checked how many full hand turns the new lug nuts engage onto the studs, it’s about 10, so I think I’m good there. I’m still randomly checking the lug nuts for correct tightness.

I’m running the new E rated AT3s at about 31 psi cold for local and regional driving, which with the new suspension, keeps everything really nice, compliant, but still very much under control. I have used 50 psi for towing a couple weeks ago, it worked great.

You should note that those E rated Toyos are not as quiet as my previous, softer Nitto TG G3s 275/70R18. I really liked those and can highly recommend them if you’re not towing relatively heavy or doing anything extreme. They are quiet and handled really well.
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I really like the small amount of poke I gained.
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This Cooper spare, a ‘tall’ 275/70R18, just barely fits up underneath - no wasted space!
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Cooper left, Toyo on right. Same height…but the Cooper spare has a narrower section width, so I didn’t give up any clearance.
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The NYTOP hub rings installed today.
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Let me know if I didn’t answer all your questions! 😊
 

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