🤯 ULTIMATE Wheel & Tire Photo Thread...

These are 38 x 13.50 R 17 Nitto Trail Grapplers
ty so much. Think the Trail Grapplers would fit OK on stock height and wheels on a 392 XR, in 37x12.50r17? if not, any better recommendation for my set-up?
 
ty so much. Think the Trail Grapplers would fit OK on stock height and wheels on a 392 XR, in 37x12.50r17? if not, any better recommendation for my set-up?
This is the size I am about to roll with after I get done mounting the last 2 wheels I have been waiting to get off Backorder for the last 2 months.
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ty so much. Think the Trail Grapplers would fit OK on stock height and wheels on a 392 XR, in 37x12.50r17? if not, any better recommendation for my set-up?
Yes the 37x12.50 will fit on stock wheels if you add wheel spacers. You will need a set of wheels with proper backspacing to avoid using wheel spacers. Spacers are cheaper than wheels.

On the height, I believe the XR is just as tall as the nonXR 392 (but I’m not absolutely certain). I have a non XR 392 and at stock height the 37s in the rear rubbed the fender liner under full articulation (off road only). On the road it was fine. I have 3 inches of bumpstop in the rear. I added 3/4 inch spring spacers to the front and rear (Fishbone Offroad) and they clear just fine now. I am 37x12.50R17 Cooper STT pros on stock rims.


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Tire would make contact on this part of rear fender liner. It pulled it out a tad and I just tucked it back in there. Added the spring spacers - not a problem any more.
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Yes the 37x12.50 will fit on stock wheels if you add wheel spacers. You will need a set of wheels with proper backspacing to avoid using wheel spacers. Spacers are cheaper than wheels.

On the height, I believe the XR is just as tall as the nonXR 392 (but I’m not absolutely certain). I have a non XR 392 and at stock height the 37s in the rear rubbed the fender liner under full articulation (off road only). On the road it was fine. I have 3 inches of bumpstop in the rear. I added 3/4 inch spring spacers to the front and rear (Fishbone Offroad) and they clear just fine now. I am 37x12.50R17 Cooper STT pros on stock rims.


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Tire would make contact on this part of rear fender liner. It pulled it out a tad and I just tucked it back in there. Added the spring spacers - not a problem any more.
View attachment 21181
Thank you this was great info for me. On the topic of spacers, and admitting my ignorance when it comes to Jeeping and suspensions like this (I come from racecar/street builds), do you have to worry about spacers in terms of widening the overall track of the front suspension? Meaning, on street car builds, doing so affects the suspension geometry enough to cause greater wear on the insides of the tires if not adjusted for via shimming or other suspension modifications. Is that not an issue/consideration for rubicon suspension? What size spacers is the 'sweet spot' in this regard when going from 35's to 37's? I don't mind more poke, stance wise, and I'd even imagine the overall platform to feel a bit more stable with a wider stance, but in my experience, spaces also weigh quite a bit and that rotational weight increases braking distance, rotational weight, transmission wear, etc. too.
Am I overthinking these aspects for a 392? Not worried about powerloss with the HEMI, but mostly asking about tire wear and suspension geometry considerations.
Thank you again for the help!
 
Thank you this was great info for me. On the topic of spacers, and admitting my ignorance when it comes to Jeeping and suspensions like this (I come from racecar/street builds), do you have to worry about spacers in terms of widening the overall track of the front suspension? Meaning, on street car builds, doing so affects the suspension geometry enough to cause greater wear on the insides of the tires if not adjusted for via shimming or other suspension modifications. Is that not an issue/consideration for rubicon suspension? What size spacers is the 'sweet spot' in this regard when going from 35's to 37's? I don't mind more poke, stance wise, and I'd even imagine the overall platform to feel a bit more stable with a wider stance, but in my experience, spaces also weigh quite a bit and that rotational weight increases braking distance, rotational weight, transmission wear, etc. too.
Am I overthinking these aspects for a 392? Not worried about powerloss with the HEMI, but mostly asking about tire wear and suspension geometry considerations.
Thank you again for the help!
I’d avoid wheel spacers if possible. They change your scrub radius which will throw your steering geometry off. They also put a lot more stress on the hubs and steering components in general. A Jeep is much heavier and higher up than a street car, so the effects will be much more exaggerated. Some run spacers and don’t have issues, personally I wouldn’t. Better to just do it right and get wheels with more offset if you need. Buy once cry once as they say!
 
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I’d avoid wheel spacers if possible. They change your scrub radius which will throw your steering geometry off. They also put a lot more stress on the hubs and steering components in general. A Jeep is much heavier and higher up than a street car, so the effects will be much more exaggerated. Some run spacers and don’t have issues, personally I wouldn’t. Better to just do it right and get wheels with more offset if you need. Buy once cry once as they say!

Why run wheel spacers? If front tire rubs at full turn, just don't turn all the way. Or add stainless washers, as spacer, to front steer stops.
 
Why run wheel spacers? If front tire rubs at full turn, just don't turn all the way. Or add stainless washers, as spacer, to front steer stops.
I like turning all the way when I'm trying to turn all the way? :)
I'm laughing actually because I can't count how many street/racer builds I've done where this is exactly the solution, or just rubbing through the fender liners and not worrying about it. But if it's rubbing suspension, I generally don't like doing that....
 
I’d avoid wheel spacers if possible. They change your scrub radius which will throw your steering geometry off. They also put a lot more stress on the hubs and steering components in general. A Jeep is much heavier and higher up than a street car, so the effects will be much more exaggerated. Some run spacers and don’t have issues, personally I wouldn’t. Better to just do it right and get wheels with more offset if you need. Buy once cry once as they say!
I think this is sound advice and definitely true. plan to replace alot of these parts earlier if you add the spacers
That said Jinni feels a lot more stable with a wider footprint and im a sucker for the stance
On non XR stock lift on 37 BFGs at full articulation I get very minor rub on front bumper fwiw
 
I think this is sound advice and definitely true. plan to replace alot of these parts earlier if you add the spacers
That said Jinni feels a lot more stable with a wider footprint and im a sucker for the stance
On non XR stock lift on 37 BFGs at full articulation I get very minor rub on front bumper fwiw
Helpful re: the bumper. I've got a shorty bumper so should be ok there. I am, however, worried that with aftermarket steel bumpers on both the front and rear, with winch, and with the AMP Research side steps, that the added weight will sag the suspension relative to a stock 392, ergo more rub. We'll find out. I think I'll try 37's with no spacers at first, see how it is to live with/rub, and go spacers if I need to after. I'm reading that 1.75" is the min spacer to avoid the lugs bottoming, but not sure if true on the OEM XR wheels or not. I'd prefer a .75" spacer to start with if possible.
 
I’d avoid wheel spacers if possible. They change your scrub radius which will throw your steering geometry off. They also put a lot more stress on the hubs and steering components in general. A Jeep is much heavier and higher up than a street car, so the effects will be much more exaggerated. Some run spacers and don’t have issues, personally I wouldn’t. Better to just do it right and get wheels with more offset if you need. Buy once cry once as they say!
Anything that is affected by spacers will also be affected by wheels with a wider offset.
 
Anything that is affected by spacers will also be affected by wheels with a wider offset.
that's how I've looked at them in the past; just as part of the wheel itself, with the increased rotational weight, at least, closer to the center of the wheel vs. distributed out towards the rims. You can probably make a lighter wheel with X offset than what a wheel+spacer combo offers at the same effective offset, but that's not always the case given how much wheel weights vary by design and maker.
 

Firestone Destination A/T2 All-Terrain Truck & SUV Tire P285/70R17 117T on 17 inch 17x8.5 Raceline 950B GAUGE Satin Black wheels rims 5x5 5x127 +18​

Jeep is SUPER quick with these on...much snappier LAUNCH...fuel mileage went from 15.7 to 16.2...ugly as hell I know...but I have RZR for offroading 90% of my riding, and Jeep for remainder...with lockers front and rear this thing will still climb a tree...


Wheel = 26 lbs - Tire = 42 lbs extremely quiet and smooth…Speed Rating T = 118 MPH
Total wheel and tire weight after balancing = 68 lbs
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Stock tire & wheel 82 pounds (Balanced)
 

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56lbs of rotational weight reduction must feel awesome!
 
56lbs of rotational weight reduction must feel awesome!
Yes sir, she will “haul the mail” for sure…rides many times better, quiet as a mouse….road handling is excellent as well and T rated for speed so running at high speeds for hours shouldn’t effect the tires…
 
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