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What is the most limiting factor on whether a certain size tire will rub or not? Is it the height or the width?

I'm looking to see if i can run 295/70/17's on a 17X9 wheel with 4.5" of backspacing. Stock JK Sahara and i don't plan on lifting.
 

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Height issues depend on how seriously you off road with you rig. If your not doing to much serious stuff or going over high center obstacles then you could run 33" without much worry. You will rub on full turning lock with this size though and it will rub the air dam (splash guard too). If you decide to run either 285/70/17 or 295/70/17s then you should consider some spacers to prevent this. You will rub if you flex hard offroading with that size and most definitely with 295/70/17 which is 34" +.

Height is an issue if flexing or clearing obstacles on a stock rig with no leveling or lift

Width is an issue with rubbing regardless of either 285 or 295 size on a stocker.

All tires are different and each mount differently on different back spacing wheels however. There are just too many factors to specifically address which is the main issue.
 

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Discussion Starter #4
Height issues depend on how seriously you off road with you rig. If your not doing to much serious stuff or going over high center obstacles then you could run 33" without much worry. You will rub on full turning lock with this size though and it will rub the air dam (splash guard too). If you decide to run either 285/70/17 or 295/70/17s then you should consider some spacers to prevent this. You will rub if you flex hard offroading with that size and most definitely with 295/70/17 which is 34" +.

Height is an issue if flexing or clearing obstacles on a stock rig with no leveling or lift

Width is an issue with rubbing regardless of either 285 or 295 size on a stocker.

All tires are different and each mount differently on different back spacing wheels however. There are just too many factors to specifically address which is the main issue.

Nitto's website is saying that the tires are 33.5" tall. I thought spacers were required if running stock wheels. I would still need spacers running an aftermarket wheel?
 

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Nitto's website is saying that the tires are 33.5" tall. I thought spacers were required if running stock wheels. I would still need spacers running an aftermarket wheel?
If they are 33.5 then you will need spacers even on an aftermarket wheel. I am running the Trail Grapplers in stock size 255/75/17 as seen here http://jkowners.com/forum/showthread.php?t=47232 and they are a very wide MT. I dunno which nittos your considering but if they are they trail grapplers you will need spacers for anything above 32". The ones I have stick out further than both the front and rear flares. They are the max I would run without spacers and I'm actually looking to add them any way because I like the stance with some spider trax.

If your getting the 33+ then you should get spacers for sure. They're a really easy mod you can do your self and make your rig with those tires functional and safe.
 

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Quick answer:
275/70R18 will rub onEVERYTHING.

Your posted size has stock backspacing, so get 1.5" spacers, drop the airdam, and you "may" be ok rubwise

I installed 275/70R18 duratracs and even after the 1.5" spacers, I'm rubbin on the air dam at full wheel lock.


Get a lift.
 

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What is the most limiting factor on whether a certain size tire will rub or not? Is it the height or the width?

I'm looking to see if i can run 295/70/17's on a 17X9 wheel with 4.5" of backspacing. Stock JK Sahara and i don't plan on lifting.
http://www.miata.net/garage/tirecalc.html

Go there and remember that full flex on a stock saha tire will snuggle your swaybars more than u shood

The rubber yer fixin to go for will rub EVERYTHING.

I went from 255/70 to 275/70R18 and the stockers rubbed the swaybars. The new rubber was biggre and rubbed even more

Buy a lift you cheap bass turd
 

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Nitto's website is saying that the tires are 33.5" tall. I thought spacers were required if running stock wheels. I would still need spacers running an aftermarket wheel?
Stockers are 6.25" backspacing on and you should be fine regarding inboard clearance to swaybar and control arms if your aftermarket wheels are 4.5" backspacing. You'd actually gain some space inboard with 295 on 4.5" Backspacing over 255 on 6.25" Backspacing.
 

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Discussion Starter #11
Stockers are 6.25" backspacing on and you should be fine regarding inboard clearance to swaybar and control arms if your aftermarket wheels are 4.5" backspacing. You'd actually gain some space inboard with 295 on 4.5" Backspacing over 255 on 6.25" Backspacing.
Damn, now i'm real confused :lol:
 

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Damn, now i'm real confused :lol:
LOL well in short with 4.5" backspacing on 9" wheels there's no need for additional spacers if you'd run 295/70 tires on them
However you may run into interference issues with your fenders when wheels get stuffed so some trimming may be required
 

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Discussion Starter #13
LOL well in short with 4.5" backspacing on 9" wheels there's no need for additional spacers if you'd run 295/70 tires on them
However you may run into interference issues with your fenders when wheels get stuffed so some trimming may be required
Let's just call my JK a grocery getter, so i shouldn't be doing any stuffing unless some kids get in the way :innocent:
 
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