What offset and size should I go for?

[18Celtics]

Hi all,

I am planning to upgrade to a Teraflex ST 3.5 lift, falcon sp2 3.3 on my 23 JLUR. In need of advice.

I want to get the Black Rhino Atlas, 35s with KO2

I have no idea what rim size, offset, and back spacing to go for. Also, what tire width is ideal?

https://www.blackrhinowheels.com/black-rhino-atlas

Mostly for road use.

Thank you,
18Celtics

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[C.Sco]

Very hard to answer this question because there are so many rim sizes and offset combinations.

Offset and backspacing are two numbers that sort of tell you the same information, they're different numbers with different formulas, but they both tell you the same thing: where the hub mounting face of the wheel is.

Offset is how far the actual center of the rim is from the hub mounting pad (the flat part of the wheel with 5 bolt holes in it that mounts against the hub assembly). 0 means the wheel is centered, a positive number means it's more inward in the vehicle, and a negative number means it pokes out more from the vehicle. For offset to be a useful number for solving your question, you have to know the wheel width, so you know exactly how far inside or outside of the hub face the wheel edge will be.

Backspacing is the distance of the same hub mounting pad on the wheel, but instead of measuring from the center of the wheel, it's measured from the inside edge. So an 8 inch rim with 4 inch backspacing is the same as having +/- 0 offset. Same with a 9 inch rim with 4.5" backspacing, and so on. If the number is lower, it pokes out more. And if it's higher, it tucks in more. Backspacing is more important than offset for you to know for the question you're trying to answer, but you can deduce the backspacing simply by knowing the wheel width and offset values.

Generally you want to maintain similar backspacing to the stock wheels, to avoid interference with vehicle parts (having too much backspacing; too much tuck) and scrub radius issues (not enough backspacing; too much poke).

Hopefully that info helps, and sorry I can't really just say "use this wheel width and this backspacing", because as you can see it's really not that simple.

Your best bet for wheel width is probably 8" minimum, 9" maximum, for 35" tires. For backspacing, try to keep it the same as stock or a bit less. Definitely don't go more. I believe stock backspacing is 6.1", so anything less than that is fine; but the closer you stay to 6.1", the more it'll keep the stock stance and avoid too much poke, if that's what you're hoping to do.

 

[The Last Cowboy]

That particular wheel looks like a universal fit. I would avoid it, as they are only lug centric. Plus the hub area, being drilled for 2 different patterns (10 holes) isn’t as strong as wheel hubs with five holes. You only have 2 offset choices in 17”. One is a 38, which is only slightly more offset than stock and the other is -10 which will stick out about 1.75-2”.

The factory wheels are 44 (+44). You will not find aftermarket wheels with more offset/backspace than that.

Most people do 12.50” width, but there are also 11.50” width and 315 width, which is about 13”.

3.5” lift on a Rubicon would be better suited to 37s in my opinion.

 

[CarbonSteel]

That particular wheel looks like a universal fit. I would avoid it, as they are only lug centric. Plus the hub area, being drilled for 2 different patterns (10 holes) isn’t as strong as wheel hubs with five holes. You only have 2 offset choices in 17”. One is a 38, which is only slightly more offset than stock and the other is -10 which will stick out about 1.75-2”.

The factory wheels are 44 (+44). You will not find aftermarket wheels with more offset/backspace than that.

Most people do 12.50” width, but there are also 11.50” width and 315 width, which is about 13”.

3.5” lift on a Rubicon would be better suited to 37s in my opinion.

Agree. 2.5" for 35's. I've had:

35's and 2.5" lift
37's and 2.5" lift
37's and 3.5" lift

The gap between 35's and a 3.5" lift will make it appear undersized and "off".

 

[GMONEY]

This can help you visitations things better

https://tiresize.com/wheel-offset-calculator/

 

[kah.mun.rah]

Hi all,

I am planning to upgrade to a Teraflex ST 3.5 lift, falcon sp2 3.3 on my 23 JLUR. In need of advice.

I want to get the Black Rhino Atlas, 35s with KO2

I have no idea what rim size, offset, and back spacing to go for. Also, what tire width is ideal?

https://www.blackrhinowheels.com/black-rhino-atlas

Mostly for road use.

Thank you,
18Celtics

IMO 35s will look way too small with that much lift on an Unlimited Rubicon. Go with 37s.

 

[18Celtics]

That particular wheel looks like a universal fit. I would avoid it, as they are only lug centric. Plus the hub area, being drilled for 2 different patterns (10 holes) isn’t as strong as wheel hubs with five holes. You only have 2 offset choices in 17”. One is a 38, which is only slightly more offset than stock and the other is -10 which will stick out about 1.75-2”.

The factory wheels are 44 (+44). You will not find aftermarket wheels with more offset/backspace than that.

Most people do 12.50” width, but there are also 11.50” width and 315 width, which is about 13”.

3.5” lift on a Rubicon would be better suited to 37s in my opinion.

Would the 18s or the 19s provide more strength?

 

[The Last Cowboy]

Would the 18s or the 19s provide more strength?

You likely wont find a 19" for a Wrangler. 18s leave your tire choices limited to mostly load range E. The way to go is 17s, where you will find the choice of offsets and the best choice of tires.

Look at other brands of wheels for more offset choices. Method, Icon, AEV, Qudaratech, Fifteen52, etc. Black Rhino makes good wheels and some of their designs will be hubcentric, but like Fuel, not all are. Some people don't care and choose solely for the look.

All I'm doing is providing my opinion and giving you. or anyone else who reads this thread, some options to think about that you may not have been aware of. I've worked in the aftermarket truck and 4x4 business at a few places and also at an independent tire shop.

 

[18Celtics]

You likely wont find a 19" for a Wrangler. 18s leave your tire choices limited to mostly load range E. The way to go is 17s, where you will find the choice of offsets and the best choice of tires.

Look at other brands of wheels for more offset choices. Method, Icon, AEV, Qudaratech, Fifteen52, etc. Black Rhino makes good wheels and some of their designs will be hubcentric, but like Fuel, not all are. Some people don't care and choose solely for the look.

All I'm doing is providing my opinion and giving you. or anyone else who reads this thread, some options to think about that you may not have been aware of. I've worked in the aftermarket truck and 4x4 business at a few places and also at an independent tire shop.

Appreciate your feedback
By more offset, you mean towards 0 offset or even negative, correct?

 

[Jeepeto]

Agree. 2.5" for 35's. I've had:

35's and 2.5" lift
37's and 2.5" lift
37's and 3.5" lift

The gap between 35's and a 3.5" lift will make it appear undersized and "off".

Just to help with visuals, here are some photos of my Jeep on 35” BFG KO2s with 1.5” XR lift

35” BFG KO2s with 3.5” Metalcloak lift

37” Yokohama G003s and 3.5”

37” Yokos and 3.5” lift with ”overlanding load out”

 

[SouthCo]

Pic confirms what the others said above, 3.5" lift is too much for 35s on a Rubicon.

Definitely a nice looking Jeep regardless...

 

[The Last Cowboy]

Appreciate your feedback
By more offset, you mean towards 0 offset or even negative, correct?

That’s generally how it’s understood or described, even though the more the wheel sticks out (some say poke) is measured in high numbers of negative. Example, a -25 wheel will stick out quite a bit, a +25 wheel will be almost completely under the fender on a Sport and edge out slightly on a Rubicon, due to axle width differences.

 

[blnewt]

Check with Teraflex prior to your wheel purchase, they should have pretty specific wheel specs for their lift. Like mention above, go w/ 17" wheels/tires for the best selection and best overall off road performance, and avoid those multi lug-hole wheels.

 

[GrayWolf.Overland]

Hi all,

I am planning to upgrade to a Teraflex ST 3.5 lift, falcon sp2 3.3 on my 23 JLUR. In need of advice.

I want to get the Black Rhino Atlas, 35s with KO2

I have no idea what rim size, offset, and back spacing to go for. Also, what tire width is ideal?

https://www.blackrhinowheels.com/black-rhino-atlas

Mostly for road use.

Thank you,
18Celtics

this model might not hub centric to jeep spec.. pick something else form Black Rhino there are other similar looking ones with the exact bore size - Hub Bore (mm) = 71.50

 

[18Celtics]

this model might not hub centric to jeep spec.. pick something else form Black Rhino there are other similar looking ones with the exact bore size - Hub Bore (mm) = 71.50

would 37x12.5x17 work?

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