[Kvanek]

Yup thats right (will it rub?)

I have searched and searched. I have read the "will it rubs" and molshoves post of "definitive answers" and many more, however have not found the right answer I need.

I have NOT found someone that has done the exact thing i am thinking. If so please post the link and I will go away.

Jeep is a 2012 2door rubicon

TF leveling kit (2"front 1"rear)
33x12.50x17 Cooper stt tires. Maybe i should i go with a skinny metric width instead?
4.5" back space wheels

From what i have found running around town this setup will be fine.
My question is when i hit the disco switch off road and start stuffing tires
will i have rub? Will it rub front or back or both and where?

If it rubs the fenders is fine. I just want to make sure it does not rub anything important that cant be trimmed.
With the 2" less backspace than oem on the wheels my guess it will get into the fenders big time.
When i stuff one now it does not look like it has the 2" to spare on the outside. Maybe the small lift will fix this?????

Thanks folks
Ken

[ncb]

The TF leveling kit won't change the up or down travel of the axles any different than stock. It's simply a ride height adjustment. Go with a small spring lift with the correct bump stops and you won't have to worry about the tires rubbing.

[222Doc]

i took a guy out with about the same set up on what i call a medium trail. he never had rubbing issue before, though I think he may have only been on easy trails before. when we got to some medium sized rock fields, at steering lock he had wee bit of rub at full flex. Nothing bad I was spotting and it looked like it was perhaps just the inner fender or the inside of the stock flair. I think if he had adjusted the steering stop out a bit might fix that at the cost of tighter steering radius. Or more back space. like 4Bs, but some states get very pick on how much tire they see on the side. So you will work with what you plan, depends on hard you push it to have issues it seems. so a 4.5 Bs is ok on most peoples jeeps running 10.5 wide.

[Prot]

The most popular and probably most economical size for 33's is 285/70-17. Just putting that out there as an option.

[paul84043]

Originally Posted by Prot

The most popular and probably most economical size for 33's is 285/70-17. Just putting that out there as an option.

This is what I'm running. It's hardly "skinny". But not ballooney and does not stick out past the flare enough to attract any attention.
I have no lift and have never rubbed, but am running 9" wheels, so probably 10, or 10 1/2" wide tires...

Edit:, when I say it's never rubbed, I ran this same set of tires on our 2010 JKU that was basically the exact same Jeep, for a year and a half.

[Kvanek]

Originally Posted by ncb

The TF leveling kit won't change the up or down travel of the axles any different than stock. It's simply a ride height adjustment. Go with a small spring lift with the correct bump stops and you won't have to worry about the tires rubbing.

I do understand wheel travel is unchanged however it seems to me that raising the height via the lift does increase the distance from the top of the tire to the wheel flair.
Am i right on this?

[Kvanek]

Originally Posted by paul84043

This is what I'm running. It's hardly "skinny". But not ballooney and does not stick out past the flare enough to attract any attention.
I have no lift and have never rubbed, but am running 9" wheels, so probably 10, or 10 1/2" wide tires...

Edit:, when I say it's never rubbed, I ran this same set of tires on our 2010 JKU that was basically the exact same Jeep, for a year and a half.

I was considering this tire size as well. I like the larger width of the 12.50 though.
I am also going with 9" wide wheels

[Kvanek]

Originally Posted by 222Doc

i took a guy out with about the same set up on what i call a medium trail. he never had rubbing issue before, though I think he may have only been on easy trails before. when we got to some medium sized rock fields, at steering lock he had wee bit of rub at full flex. Nothing bad I was spotting and it looked like it was perhaps just the inner fender or the inside of the stock flair. I think if he had adjusted the steering stop out a bit might fix that at the cost of tighter steering radius. Or more back space. like 4Bs, but some states get very pick on how much tire they see on the side. So you will work with what you plan, depends on hard you push it to have issues it seems. so a 4.5 Bs is ok on most peoples jeeps running 10.5 wide.

Would it be safe to say that a 12.50 tire on a 9" wheel would be close to 12.50 wide or in the low 11's?

[ncb]

Originally Posted by Kvanek

I do understand wheel travel is unchanged however it seems to me that raising the height via the lift does increase the distance from the top of the tire to the wheel flair.
Am i right on this?

Sitting still yes. But the height increase won't change the up travel of the axle. It will still contact the bump stops as it would with out the leveling kit. A thick enough spacer might collapse the spring and limit up travel, but that's not the right way. A leveling kit alone won't keep larger tires out of the fenders. It's strictly a ride height adjustment.

[kswyg001]

Originally Posted by Kvanek

Would it be safe to say that a 12.50 tire on a 9" wheel would be close to 12.50 wide or in the low 11's?

You'll be fine, I run a 10.50" tire on a 10" wide wheel without any issues. I have put 50k miles on this setup on the JK and I also have this setup on a TJ Rubi that I do maintenance on.


As far as the backspacing and touching fenders- bumpstops will solve it. I have 4dr coils and wheels with essentially 2" of backspacing and they touch the fenders with just 31's.

[Kvanek]

Originally Posted by ncb

Sitting still yes. But the height increase won't change the up travel of the axle. It will still contact the bump stops as it would with out the leveling kit. A thick enough spacer might collapse the spring and limit up travel, but that's not the right way. A leveling kit alone won't keep larger tires out of the fenders. It's strictly a ride height adjustment.

Gosh I just cant picture how that can be. If we were to exagerate it for visual purposes only, imagine I put a 5 gallon pail in the spot that the spacers would go.???? To me now it seems that I have pushed the tire down away from the fender say 15 inches. If we say the stock suspension up travel is 6 inches then when the suspension is fully compressed my tire should be the distance of the bucket away. I just seems that however much you increase the gap from fender to wheel would allways be there. Confused.

[Kvanek]

Originally Posted by kswyg001

You'll be fine, I run a 10.50" tire on a 10" wide wheel without any issues. I have put 50k miles on this setup on the JK and I also have this setup on a TJ Rubi that I do maintenance on.


As far as the backspacing and touching fenders- bumpstops will solve it. I have 4dr coils and wheels with essentially 2" of backspacing and they touch the fenders with just 31's.

Yup i see that back tire is ready to start eating some fender. Extended bumpstops seem like they take away valuable wheel up travel.

So based off your 2" backspace (making your tire stick out a good 2") a 12.50 tire if it is only 11.50 wide with 4.5bs wheel should move the tire in 2.5 more inches and will be pretty close to edge for edge on tire and fender. Am i reading you right?

[kswyg001]

^^ to explain what is going on there- the bumpstop tells your suspension where it will stop compressing. So no matter if you have a 15" lift coil or a 2" shorter coil, the bumpstop will still stop your axle in the same spot everytime.

You could (and some people even recommend) do just larger bumpstops and go straight to 35's. You wouldn't contact your fenders and you would be on 35's, but- you would have extremely limited up travel. I had 35's on my jeep without any lift but it would have rubbed the fenders like crazy.



edit: 12.50's on stock rubi wheels and with spidertrax spacers do sit pretty flush with the fender, maybe stick out just a little. That is 35's and no lift.